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Bon Tempe Reservoir

Date: Nov. 23 - 24, 2019
Location: Fairfax, CA
Event Director: - 415.456.8118
Course Setter: Johanna Merriss
Type: C; Annual Volunteer Appreciation Event; LIMITED ATTENDANCE; RESERVATIONS REQUIRED

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


This annual event is being held in honor of the BAOC volunteers who have worked hard and used their skills to create orienteering experiences for all of us. The event is open (and free) for all who have volunteered to help at BAOC and GCO events in 2019; also for those who have volunteered to direct events, set courses, or serve as Board members in 2020.

The event will take place over two days, Saturday & Sunday, November 23th & 24th. The courses will be the same both days.

The Bon Tempe Reservoir is a beautiful orienteering area located on the slopes of Mount Tamalpais near Fairfax in Marin County. The varied and technical challenges encompass both steep redwood forest areas and beautiful oak woodlands. The map, which is up to international standards, was made a few years ago by Bill Cusworth to replace our old, problematic map (Thanks, Bill!).

As stated above, this event is free to all participants. Well, okay, there is an expense​—​there is a park day-use fee of $8.00 per car collected at the entry kiosk. This kiosk is staffed sometimes, but usually not, so you will most likely need to use their "automated pay station" that accepts debit and credit cards, and cash up to $10 bills (but it does not return change!). That machine is about 150 meters beyond the kiosk, on the right side of the road.

BAOC is a great, all-volunteer organization. Thank you all for making it succeed.

Reservations Required

The park managers have allowed us only a limited number of spaces for each day. So, as usual, advanced reservations will be required, and will be accepted on a first-come first-served basis. Please do not show up at the park without a reservation. You will not be allowed to compete.

(Reservations will open later.)

Schedule For Both Days

 10:00 AM – 12:30 PM: Starts open
           2:00 PM: Courses close

Event Volunteers Needed

Although this will be a "bare-bones" event, we will still need the following volunteers:

Driving Directions

The approximate coordinates for the event are 37.9485,-122.5974.

The first challenge of the event is to locate it! Due to MMWD rules, no directional signs will be posted. There are several ways to get to Bon Tempe from Highway 101 in Marin. the default route is listed here:

From Highway 101 in Greenbrae, take the Sir Francis Drake Blvd exit, and go west for 5.5 miles to the town of Fairfax. Turn left at Claus Dr (Rino gas station on the right), and then immediately take another left onto Broadway. Turn right at the next corner, which is Bolinas Rd.

Stay on Bolinas Rd for 1.5 miles. Turn left at the large, brown, wooden sign with white lettering that says "Lake Lagunitas". Stay on this road until you reach the ranger kiosk. Pay the entrance fee ($8 per car) at the entry kiosk or pay-and-display machine (see comments above).

Proceed on the paved road to the parking lot at the very end. (Do not turn right onto the gravel road to Bon Tempe Dam.)

There's a map here that shows the location of the event.