Photo gallery image (click to enlarge)

California Orienteering Week (COW)

Seven National Events Over Nine Days

Date: Mar. 17 - 25, 2018
Location: San Francisco Bay Area and Sacramento area
Event Directors: - 510.407.1876, - 916.220.0224
Course Setters: Matej Šebo (BAOC), Steve Gregg (BAOC), George Minarik (BAOC), Dwight Freund (GCO), Heidi Cusworth (GCO), Bill Cusworth (GCO)
Type: A; Seven (sanctioned) National Events spread over 9 days, including 5 Middle events, 1 Long, and 1 Sprint — organized by BAOC and GCO (pending park approval)

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

This year's COW will be a seven-day National Event organized by the Bay Area Orienteering Club (BAOC) and Gold Country Orienteers ( (GCO).

More information will be available closer to the events.

Embargo Notice

Because these are National Events, the areas close to the races are embargoed (ref. OUSA Rule A.7 ( This is done for the purpose of fairness.

Thus, from September 20, 2017 through the completion of the events:

Anyone who visits the embargoed areas can still participate in the event, but will not be included in the official results, will not receive awards, and will not earn OUSA ranking credit.

Visit Tri-Valley logo

(This notice does not apply to people who will participate on the recreational courses.)


Note: As of October 14, 2017, all the events are pending permits from the respective parks.

Stage 1 – Saturday, March 17

Stage 2 – Sunday, March 18

Stage 3 – Monday, March 19

Stage 4 – Wednesday, March 21

Stage 5 – Friday, March 23

Stage 6 – Saturday, March 24

Stage 7 – Sunday, March 25


¹ Sanctioned by Orienteering USA (OUSA)