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Peggy Dickison (Photo: Judy Koehler)

Calero Reservoir - Results

Date: Sunday, October 3, 2004
Location: Morgan Hill, CA.
Event Directors and Course Setters:
- 408.732.4818
- 408.996.8749
Type: B; White (Beginner) through Green courses, with compressed chase format for a long course than includes both the Brown and Green courses. Something for everyone!
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Writeup by Dan Greene and Tapio Karras

We have to begin our account of the Calero event by thanking our volunteers. The unusual format of this event would not have been possible without plenty of volunteers. First we'd like to thank Trinka Gillis who organized the e-punch scoring for the event. About half way through the event, Evan pronounced this to be our most complicated e-punch event ever, and with good reason: it had alternate variations of courses, interval starts with a dummy control, remote field operations, and the need to produce prelude results within a few minutes of the start of the chase. On e-punch Trinka was helped by Evan Custer, Jeff Lanam, and Bjorn Widerstrom.

Ev and Jean Beuerman registered a larger than usual crowd, and Terry Farrah gave beginner clinics. Thanks also to Audrie Faist for obtaining permits, Martin Kunz, Hannu Haarma and Harold DeMoss for helping at the start, and Jim Fish, Galena and Oleg Shakhnovsky for helping at the finish. It was great to have help at the end of the day with control pick-up: Penny and Harold DeMoss, Kelly Wells, Peter Graube, Mark Blair, Rich Parker and Bill Straka.

Congratulations to the winners: "The Flaming Arrows" on White; Marta, Tomasz & Jacek Deptula on Yellow; Jackie Wong on short Orange; William Gilmore on long Orange; Parag Gupta and Beth Dixon on Brown; and Gary Carpenter and Penny DeMoss on Green. We'll return to the chase results later, after some comments on the more unusual aspects of the event.

The New Map

Since we last orienteered at Calero most of the area has been remapped by Zoran Krivokapic. Not all of the map was new, Zoran did not map areas that were deemed reasonable up-to-date. Most of courses began with their first few controls in an area mapped carefully by Bob Cooley about 7 years ago (this was also the area of the left wing of the butterfly).

Tom Jahn standing by a huge fallen tree at Big Basin in 1996 (Photo: Joel Thompson)

White through Brown also visited the northern peninsula, which was not remapped. Altogether the orienteering map experience was significantly improved. As course setters, we found it great to have all the accurate vegetation detail---it created many more features to use for control locations and it added technical detail to otherwise bland areas.

You might have noticed the Calero map's unusual 25 foot contour interval. The Calero map was originally based on a survey map rather than a real orienteering base map. The unusual absolute accuracy of the base map let us have some fun experimenting with GPS vetting---we were able to check the accuracy of some of the control location and map features---but we found traditional vetting to be more effective. We think the large contour intervals surprised some orienteers: the contrast between the very accurate feature detail of the new map, and the missing contour detail of the base map may have been disconcerting to some orienteers.

Mark Petersen and Gavin Wyatt-Mair, winners of the Seniors division in the 6-hour Briones rogaine, hotfoot it into the finish (Photo: Jay Hann)

Zoran is trying to introduce two new mapping conventions to the IOF standard, and he used these conventions when he drew the Calero map, although he left us with an OCAD file where we can change a setting and print the map with the old IOF standard. For this event we printed the map with Zoran's new conventions. The first of his innovations you almost certainly saw on your map. Down trees are shown with a symbol that indicates the direction of the trunk (although it does not show the actual extent of the trunk, like our Big Basin map). His second innovation introduces green cross-hatched lines for undergrowth that is fight. This harmonizes undergrowth with the solid green symbols for vegetation, which already have three levels: slow run, difficult to run, and fight. It seems like this new convention would be useful in the Bay Area, where we definitely have undergrowth that is fight, but the old IOF standard would have us using dark green for such areas. I don't know of any instances where this second new mapping convention was near a course, but you can see on the map and in the map key. Since we can print the map either way, let us know if you have any strong opinions about these new conventions.

Top blue course finishers at Burton Creek Ski-O in 2001: Kent Ohlund and Rafael Ruiz

The Butterfly

The Calero green course, which was also stage two of the chase, included a "butterfly" at the end of the course. A butterfly consists of two small loops, with the center control of the butterfly visited three times by the runners. Runners traverse the two "wings" of the butterfly in different orders, but will eventually traverse the same total set of legs.

Butterflies are rarely used in North American courses, although they have been appearing more frequently in major European events. We looked at some of the web discussions on butterflies before we designed the Calero butterfly. In Europe butterflies are usually used on elite courses with traditional staggered starts, where runners that make up the stagger can have a significant undesirable advantage. For this reason butterflies are usually placed later in the course, use large wings, and are located in low visibility areas, all for the purpose of separating runners that might be running together.

Gerry Goss at Briones, October 2001 (Photo: Judy Koehler)

At Calero, our philosophy was different. We were trying to create an enjoyable pack-running event by starting the chase runners close together, so the use of the butterfly was not to prevent running together but rather to scramble runners one last time near the end of the course. Moreover, the compressed chase, with its first-to-finish order, is a good spectator course. So, unlike the usual practice, we placed the center of the butterfly in a highly visible location.

We were curious how the butterfly would work, and we saw the effects immediately. In the top three runners, Martin was able to move up one place in the butterfly. Similarly, Vlad, Evan, and Bob were able to pass competitors while their competitors were on opposite patterns in the butterfly. And about a dozen spectators enjoyed watching near the butterfly and trying to keep track of where everybody was in their multiple trips to the center of the butterfly.

The Chase

We think that the compressed chase format is unique to BAOC. First tried at Monte Bello in 2001; it's designed to create an exciting chase course, even with the smaller numbers of competitors that normally attend a local event. The 30 second fixed interval starts of the chase guarantee that everyone will have competitors near them in the chase, regardless of how well they did in the prelude. While the starts are usually "compressed" together in the chase, this does not always happen---sometimes competitors finishing with a few seconds of each other in the prelude will have their spacing expanded to 30 seconds. At Calero the attendance was unusually high, so consequently there were runners finding the 30 second interval of the chase to be larger than their spacing at the finish of the prelude.

Janet punches the finish with the help of twin daughters Katie and Sarah; Morgan Territory A-meet, October 2001 (Photo: Judy Koehler)

This raises the question: what's the best strategy for the prelude? With few runners, there might be reason to conserve energy, for example, there's no sense winning by 5 minutes if you'll start only 30 seconds ahead. Conversely, with the crowds we had, there's the real possibility that a few seconds in the prelude might be rewarded with a 30 second lead in the chase, so spending energy in prelude is important. A similar analysis would apply to risk taking. Vlad, for example, concluded that the best strategy would be to go-for-broke in the prelude, knowing that the magnitude of any errors he made in the prelude would be reduced by the compression of starts in the chase.

Another aspect of the chase that is always surprising is the amount of reordering that occurs on the very first leg of the course. You'd think that 30 seconds is a large spacing, but already by the first control, 3/4 of the competitors had traded positions, with some gaining and loosing as many as 3 positions in the start order. It seems like there is less reordering in a traditional chase, even when competitors start with a few second spacing, than the amount of reordering in a compressed chase with 30 second spacing. Maybe the 30 second spacing is just large enough to force individual navigation, or maybe the 30 second spacing is just small enough to tempt runners into risky attempts to catch predecessors. Or maybe it's just the adrenaline of the start. What ever it is, there's always an enormous amount of chaos on the first leg.

Syd Reader sprints to the finish at Las Trampas (1999)

Congratulations to Mattias Eriksson, a new member of the club, who won the chase. After minor mistakes in the prelude left him in fourth place, he quickly caught the lead pack in the chase, and then got ahead on the strength of a good route choice on the long green leg (4-5). You can see his routes along with commentary using RouteGadget, a new route animation tool that Tapio has imported from Finland. Check out the RouteGadget Introduction and add your own route for this event with the tool. Maybe then we can figure out just who was leading all those trains off course!

Notes Regarding the Chase

By Dan Greene

How to read the splits for the second stage of the compressed chase.

Unlike an ordinary chase, where the times of the prelude and chase are combined for an overall time, the compressed chasers are started on 30 second intervals based on the order of their finish in the prelude. The intent is to "compress" the starts together to create more head-to-head competition, although you'll notice several cases where close finishers (< 30 seconds) in the prelude were "expanded" in the chase. I guess the nearest analogy is competing for pole position in a car race, although here the advantage of start position is more significant.

Melissa Criqui and Marsha Jacobs show off their "O in the Oaks" T-shirts for the Morgan Territory A-meet, October 2001 (Photo: Judy Koehler)

The compressed chase is still a first-to-finish event, where the advantage from the prelude is carried forward in 30 second increments, rather than as an actual time. The event was timed with e-punch by giving everybody the same start time, and then having them punch a "dummy" start unit which was actually control number 221. This means that you can read the following things from the posted results:

1) The results are sorted in correct first-to-finish order.

2) To obtain your actual time on the course, you must subtract your split for the first "dummy" split reported in the results from your total time. For example, the winner, Mattias Eriksson ran the course in 33:25 - 1:29 = 31:56.

3) You can obtain your start position by dividing the first "dummy" split by thirty seconds and adding 1. For example, Mikkel Conradi, moved up five places from start position (6:30 / :30) + 1 = 14, to finish position 9.

4) All of your remaining splits are sifted by 1. For example, the center of the butterfly was first reached as the 8th control on everyone's course, but its reported as the 9th leg in the results.

5) There were two different orders for the butterfly, so you need to take care comparing the splits after the 9th split. Runners starting in odd positions (1st, 3rd, 5th) did the left wing of the butterfly first, so they will have splits for controls 241, 242, 243, 220 (center), 231, 232, 220 (center, go). While those starting in even positions (2nd, 4th, 6th) did the right wing of the butterfly first, so they will have splits 231, 232, 220 (center), 241, 242, 243, (center, go). It is easy to tell which order a runner did the butterfly by looking at their first "dummy" split time, those doing the left wing first will have first splits near whole minutes, while those doing the right wing first, will have first splits ending near :30. Everybody eventually did the same set of legs so you can rearrange the results if necessary to compare splits.

David Giese and Thorsten Graeve compare route choices at the 2002 Bear Valley Ski-O (Photo: Tony Pinkham)

6) Because everyone had the same start time, the cumulative times in the splits correspond to when runners actually visited the controls. For example, from the splits we know that there was a pack just starting to form at control 2, with Martin (6:13) punching ahead of Mattias (6:19) and Doug (6:24). It was not yet the lead pack, and it would break apart and rearrange several times before the end of the race, but it already contained the top three finishers. You can use the cumulative times to figure out when you passed (or were passed by) your fellow competitors.

7) The regular brown course was identical to the prelude (stage 1) and the regular green course was identical to the chase (stage 2), so you can compare times and splits across the results. However, the regular green course did not use a "dummy" first control, so the splits must be shifted by one and the total times adjusted by the "dummy" first split before the chase results can be compared with the green course results.

Calero County Park

San Jose, CA
Sunday, October 3, 2004

Preliminary Results

  Pl  Name                                         Time

White Course     (3.5 km, 195 m climb, 12 controls)

   1  Flamming Arrows: Neal & Gus Callahan,
        Matt Mort, Ben Rumptz, Conner Thompson     55:17
   2  Elliot & Elizabeth Clark                     56:25
   3  Quigley                                      58:20
   4  Chelsea Jeanette Bearden                     59:48
   5  Wilkins                                      60:30
   6  John Hanley                                  60:42
   7  Jimmy & Mai Chung                            63:22
   8  Kayla Anzalone, Stephanie LaBouve            66:35
   9  Matt Church                                  67:04
  10  Teri & Caitlin Fogarty, Kelly Gardner        73:05
  11  Gus Liu                                      73:33
  12  Lauren & Teri Kent                           76:40
  13  Damaris Bustos, Joellyn Hamaguchi            78:27
  14  Kaitlin Highstreet                           81:30
  15  Gray Dolphins #2: Sarah & Lee Ann Holloway,
        Mary Elizabeth Bellizzi, Selinna Maefau    85:27
  16  Gaye Holman                                  87:43
  17  Raffael Porres                              104:25

      Landau                                        DNF
      Nelsons                                       DNF

Yellow Course    (3.1 km, 210 m climb, 12 controls)

   1  Marta, Tomasz & Jacek Deptula                45:38
   2  Grave                                        48:00
   3  Shannon & Bill Cole                          51:37
   4  Dinesh Moorjani                              52:47
   5  Carl & Aleene Reisinger                      62:12
   6  Robin Myers, Nelson & Kimberly Rodriquez,
        Tiffany & Amanda Myers-Nijmeh              66:02
   7  Jeff Camillo                                 67:38
   8  Nicole Cronin                                68:24
   9  Ron, Meg & Emily Thumann                     72:38
  10  Stacy Goss, Sue Christensen                  74:36
  11  Patrick Grace, Kevin Cheung                  76:44
  12  Brian Hart, Stephen, Jessie, Tammy, AJ       78:38
  13  Doug Alexander                               80:00
  14  Jeff, Alex & Ana Maria Boenig                81:15
  15  Tejpal Chadha, Jean Grace                    81:44
  16  Gray Dolphins #1: Caitlin & Peggy Stockwell,
        Arianna Bellizzi, Elizabeth Graham         83:38
  17  Katin                                        84:00
  18  Hollister Pathfinder Club                    89:19
  19  Gerry & Carol Grismore                       89:55
  20  Lei Holman                                   92:12
  21  John & Justin Surma                          93:25
  22  Marks                                        95:11
  23  Quess Liu                                    98:38
  24  Ryan & Brent Browning, Mark & Keith Jonk    106:34
  25  Srikar                                      118:00
  26  Graham Stein                                140:04

      Pablo Chamorro, Belen Sanchez                 MSP  (#7)
      Siddharth, Gayathn Sriram                     MSP  (#10, #11)
      Waite, Trieger                                DNF
      Rassier                                       DNF
      Schaeffer                                     DNF
      Davidson                                      DNF

Short Orange Course  (2.4 km, 210 m climb, 10 controls)

    1  Jackie Wong                    1:17:56
    2  Garrett Pitsenbarger           1:26:35
    3  Carl & Gavin Williams          1:55:56
    4  Lei Yang                       1:56:42
    5  Audrie Faist                   2:08:52

       Rajesh Kulkarni                  DNF
       James Evans                      DNF
       David Marwood, Joanne Thiel      DNF
       Brian Kirshner                   DNF
       Harry Hall                       DNF

Orange Course  (3.2 km, 240 m climb, 12 controls)

    1  William Gilmore                  54:06
    2  Harold DeMoss                  1:02:33
    3  Lukasz Fidkowski               1:03:46
    4  Eric Prestemon                 1:04:09
    5  Michael Sobczyk                1:04:44
    6  Parag Gupta                    1:06:34
    7  Cynthia Sparks, Rick Norbut    1:09:38
    8  Apsel Berkessel                1:14:04
    9  Daniel McClure                 1:16:23
   10  Jeff Camillo                   1:27:44
   11  George Hall                    1:33:09
   12  Bud Laird                      1:48:06
   13  Alan Houser, Peter Shaw        1:59:37
   14  Alexander Saltman              2:09:09
   15  Sal & Al Yau                   2:09:34
   16  Mashno                         2:13:25
   17  Hammonds                       2:21:14
   18  Greg Heironimas                2:35:07
   19  Manny Barra, Dave Shaw         3:12:59

       OKeefe                           DNF
       Nancy & Sally Smith              DNF

Brown Course   (2.1 km, 195 m climb, 9 controls)

    1  Parag Gupta                      48:42
    2  Mary & Michael Fleishman       1:23:15
    3  Beth Dixon                     1:31:30
    4  Dean French                    1:32:38
    5  Marc Schreiber                 1:35:12
    6  Jim Fish                       1:39:30
    7  Barbara Straka                 1:47:33
    8  Nancy Lindeman                 2:15:10
    9  Hongche & Sarah Liu            2:35:50

Green Course   (3.3 km, 285 m climb, 15 controls)

    1  Gary Carpenter                   57:42
    2  Alex Krasnov                     58:06
    3  Rod Jaehn                      1:00:42
    4  Penny DeMoss                   1:08:36
    5  Peter Graham                   1:18:46
    6  Kelly Wells                    1:23:02
    7  Bernhard Hiller                1:23:19
    8  William Straka                 1:28:58
    9  Anna Zaster                    1:29:43
   10  Gerry Goss                     1:32:13
   11  Bud Laird                      1:38:10
   12  Denis Kourakin                 1:39:58
   13  Jeff Lanam                     1:48:00
   14  Brian Ridgway                  1:50:24
   15  Yelena Krasnov                 1:50:54
   16  Alan LaVergne                  2:37:41
   17  Chad Davis                     3:24:02

       Judy & Tom Cronin                DNF
       Cathy Bolger                     DNF
       Stephanie MacLean                DNF
       Wes Erck                         DNF
       Gina Christopher                 DNF
       Rosemary Johnson                 DNF
       Lank Kim                         DNF
       Kristi Ridgway                   DNF
       Phillip Hoare                    DNF

Chaser - Stage 1  (2.1 km, 195 m climb, 9 controls)

    1  Syd Reader                       19:51
    2  Doug Stein                       21:39
    3  Martin Kunz                      21:52
    4  Mattias Eriksson                 22:38
    5  Rex Winterbottom                 22:57
    6  Thorsten Graeve                  24:26
    7  Matthias Kohler                  26:56
    8  Steve Gregg                      27:16
    9  Vladimir Gusiatnikov             28:16
   10  Jonathan Owens                   30:30
   11  Jim Waite                        30:33
   12  Dan Holman                       32:24
   13  Werner Haag                      32:39
   14  Mikkel Conradi                   33:54
   15  Doug Bass                        34:02
   16  Andrejus Masalkovas              34:42
   17  Derek Maclean                    35:43
   18  Rich Parker (SDO)                35:52
   19  Ken Vomaske                      38:07
   20  Toby Ferguson                    38:40
   21  Mark Blair                       40:07
   22  Bob Cooley                       41:52
   23  Brandon Nugent (SDO)             44:11
   24  Evan Custer                      47:05
   25  Dennis Wildfogel                 48:26
   26  Bjorn Widerstrom                 48:39
   27  Tim Dreby                        48:46
   28  Bill Wright                      51:11
   29  Joe Knapp                        53:13
   30  Peter Graube                     54:15
   31  Eric Rosenzweig                  54:19
   32  Dave Ingram                      54:32
   33  Joe Eardi                      1:00:26
   34  Kristi Ridgway                 1:00:28
   35  Mark Rice                      1:01:36
   36  Brian Ridgway                  1:02:13
   37  Chris Roper                    1:03:16
   38  Jennifer Kerr                  1:06:19
   39  Dan Dwyer                      1:07:45
   40  Oleg Shakhnovsky               1:08:37
   41  Bob Strauss                    1:21:34
   42  Sean Campbell                  1:25:15

       Kent Ohlund                      DNF
       J Klahn                          DNF

Chaser - Stage 2  (3.3 km, 285 m climb, 15 controls)

    1  Mattias Eriksson                 33:25
    2  Martin Kunz                      33:31
    3  Doug Stein                       33:45
    4  Rex Winterbottom                 41:24
    5  Vladimir Gusiatnikov             42:19
    6  Thorsten Graeve                  42:54
    7  Steve Gregg                      42:55
    8  Matthias Kohler                  46:37
    9  Mikkel Conradi                   47:36
   10  Jim Waite                        49:02
   11  Andrejus Masalkovas              49:48
   12  Syd Reader                       50:10
   13  Werner Haag                      56:30
   14  Jonathan Owens                   59:21
   15  Doug Bass                      1:00:31
   16  Ken Vomaske                    1:07:07
   17  Dennis Wildfogel               1:10:12
   18  Mark Blair                     1:12:17
   19  Evan Custer                    1:12:20
   20  Rich Parker (SDO)              1:12:25
   21  Bob Cooley                     1:13:42
   22  Brandon Nugent (SDO)           1:13:45
   23  Bjorn Widerstrom               1:16:40
   24  Eric Rosenzweig                1:19:46
   25  Chris Roper                    1:20:51
   26  Joe Eardi                      1:21:01
   27  Dan Holman                     1:23:18
   28  Tim Dreby                      1:28:49
   29  Bill Wright                    1:30:10
   30  Mark Rice                      1:54:02
   31  Dave Ingram                    1:55:37

       Oleg Shakhnovsky                 DNF
       Peter Graube                     DNF
       Jennifer Kerr                    DNF
       Bob Strauss                      DNS
       Derek Maclean                    DNS
       Kent Ohlund                      DNS
       Sean Campbell                    DNS
       Brian Ridgway                    DNS
       Joe Knapp                        DNS
       Toby Ferguson                    DNS
       J Klahn                          DNS
       Dan Dwyer                        DNS


DNF = Did not finish (one or more controls missed)
MSP = Mispunched (one or more incorrect controls)
DNS = Did not start