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Las Trampas Scramble

Las Trampas Regional Wilderness

Date: (Sun.) Feb. 12, 2012
Location: San Ramon, CA
Event Director: - 541.401.7595
Course Setter: Wes Erck
Type: Rogaine; Mini-rogaine style course (team score-O) — mass start with a 3-hour time limit

Please note that fees and time limits apply. Events are typically not canceled due to bad weather.

Saturday, February 11 Update:

Over 30 teams have already signed up for Las Trampas this Sunday. Great turnout for just 3-weeks notice! There's been a little bit of rain, so wear shoes with good traction. Bring a jacket too, so you'll stay warm during the post-race celebrations. We'll have some snacks for after the race.
Remember to show up on time for the mass-start! We want to wrap up registration by 9:00. To make that run smoother, we've provided a registration form (PDF/390KB) that each team can print at home and fill out in advance. (Don't worry, this is optional, we'll have forms at the event too.) We'll see if this saves time.

Wednesday, February 8 Update:

We have over 20 teams registered now! Looking forward to a great event. If you want to join fun, we still have room. It helps if you RSVP by sending a quick email to .


This is a mass start event, so be on time!

  8:30 AM: Registration/Check In
  9:00 AM: Map distribution and pre-race instructions
  9:30 AM: Mass start
12:30 PM: Course closes
  1:00 PM: Award ceremony

The assembly area will be at the Little Hills Picnic Area off Bollinger Canyon Road.


Adult non-members: $15/person
Adult club Members: $10/person

Youth non-members: $10/person
Youth club members: $5/person

If you want to save some time at the event, your team can file out this registration form (PDF/390KB) in advance.

RSVP Requested

If it's at all possible, please RSVP your team information by February 8. We will accept day-of-race registration, but an RSVP will streamline the registration, and ensure that we have enough maps and supplies for everyone. The RSVP is non-binding, just send an email with your name, team, club membership status, and contact information.

Team Structure

All participants must be in teams of 2–5 people. If you need help finding a team, send an email! And feel free to utilize the BAOC and/or Facebook page ( There will be special recognition for the best all-male team, all-female team, mixed team, veteran team (all members over 45), and teams with youth participants. Note, however, this is a very physical event, not designed for young children — the Vasona Lake event is a much better option for them!


Wes Erck has designed a "ROGAINE" style course. We will set out 38 checkpoints, each one is worth 100 points. Your team chooses it's own route, to get as many points as possible within 3 hours.

Notice: Due to course setting constraints from the park, the course will be very physical. The shortest feasible routes include about 200 meters of climb. There will be five water stops on the course — whether you encounter these will depend on your particular route.

Be sure to read the Course Setter's Notes for more information.

Note: Most BAOC events include special courses for beginners and younger kids. However, this particular event does not. First timers are still welcome. You don't need to be an expert, but someone on your team should have basic map reading skills, and you should be prepared for a physical challenge. For a gentler introduction to orienteering, the Vasona Lake event the following weekend will have more of a beginner focus.


Each team should bring basic trail running/hiking supplies.

Each team will be provided a map. The course can be completed without any navigational aids, but you may use any tools that you like, including compass, altimeter, and GPS. Compasses can be rented for $1 each.

Scoring will be done with the SPORTident (SI) system (see our User's Guide to Electronic Punching). Each team must carry an SI stick. These can be rented for $3. (SI-5 sticks [30-control limit] will be sufficient for most teams, but elite teams may wish to use an SI-6 stick for the extra storage capacity [64 controls].)

Driving Directions

From the north, east and south, take I-680 to the Crow Canyon Road West exit in San Ramon. Go west on Crow Canyon to Bollinger Canyon Road. Turn right (north) onto Bollinger Canyon Rd, and continue about 4 miles to the Little Hills parking area on your left, near the end of Bollinger Canyon Rd.

From the west, take Highway 238 east from Highway 880, or Highway 580 southeast from Oakland. Shortly after the merge of Highways 238 and 580 (about 3 miles from 880 when taking 238), take the exit for Center Street and Crow Canyon Road. Turn left onto Center St, turn right onto Castro Valley Blvd, and turn left onto Crow Canyon Road. Follow Crow Canyon Road north several miles to Bollinger Canyon Road. Turn left (north) onto Bollinger Canyon Rd, and continue about 4 miles to the Little Hills parking area on your left, near the end of Bollinger Canyon Rd.