Available distances
About
Bear Creek - Orinda takes place on August 7, 2027, in Orinda, Contra Costa County, California, on the trails of Briones Regional Park. All three distances start at 7:30 a.m.: a half marathon of 21.4 km (13.3 mi), a 10K (6.3 mi) and a 5K (3.1 mi).
The East Bay hills are steep, grassy and almost entirely unshaded, which by August means dry, golden ground and a sun that arrives early. A 7:30 a.m. start gives you an hour of decent conditions before the exposure starts to bite, so run the first climbs deliberately and carry water even on the 10K.
Highlights
- Forest
- High altitude
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Races nearby
Other upcoming races around Orinda.
Reservoir Dogs Trail Race
Oct 10, 2026 · Orinda, CA · 2 mi away
3.1 mi · 6.2 mi · 13.1 mi · 21.7 mi
Lafayette Reservoir Run
Oct 18, 2026 · Lafayette, CA · 5 mi away
6.2 mi · 3.1 mi · 2 mi
Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk
Nov 1, 2026 · Oakland, CA · 7 mi away
1 mi · 3.1 mi
Restless Soles: 4 or 6 mile Night Run + Music Event
Oct 31, 2026 · Walnut Creek, CA · 8 mi away
6 mi
Alameda Island Running Festival
Sep 20, 2026 · Alameda, CA · 10 mi away
13.1 mi · 6.2 mi · 3.1 mi · 1 mi
The Donut Fun Run
Oct 17, 2026 · Alameda, CA · 10 mi away
3.1 mi