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Trail Running Calendar near Orinda 2025-2026

Explore the top trail runs near Orinda for 2025-2026! We've gathered 122 exciting races in the area. Check out our detailed list below to find your next local race.

March 2026
Mar
14
Saturday

Zoom San Francisco

5 km 10 km Half Marathon
Mar
20-22
Fr - Su

Oakland Marathon

5 km 10 km Half Marathon Marathon
Mar
21
Saturday

Redwood (Spring) Trail Run

Trail Run 5 km 5 mi ... Marathon 50 km
Mar
28
Saturday

Western Pacific Marathon

Trail Run 5 km 10 km Half Marathon
Mar
29
Sunday

Golden State 5K

5 km
April 2026
Apr
4
Saturday

Golden Gate Headlands Marathon

Trail Run 10 km 13 mi 26 mi
Apr
4
Saturday

Diablo Trails Challenge

Trail Run 5 km 10 km Half Marathon 50 km
Apr
4
Saturday

Antioch Rotary Club Bunny Hop 5K

5 km
Apr
11
Saturday

Romancing the Island Half Marathon

Trail Run 10 km Half Marathon
Apr
18
Saturday

Badger Cove Half Marathon

Trail Run 5 km 10 km Half Marathon
Apr
25
Saturday

Mt. Tam Wild Boar Half Marathon

Trail Run 10 km Half Marathon
May 2026
May
2
Saturday

Miwok 100K

Trail Run 100 km
May
3
Sunday

Aztec Run

5 km
May
9
Saturday

Muir Woods Marathon

Trail Run 7 mi Half Marathon Marathon
May
16
Saturday

Napa Wilderness Trail Runs

Trail Run 10 km Half Marathon 30 km 50 km
May
16
Saturday

Rim Rock 50 Mile Trail Challenge

Trail Run 50 mi
May
16
Saturday

Wildcat Half Marathon

Trail Run 5 km 10 km Half Marathon
May
30
Saturday

Nitro Trail

Trail Run 5 km 10 km Half Marathon
June 2026
Jun
6
Saturday

Bay Area 100

Trail Run 100 mi
Jun
28
Sunday

Mare Island Half Marathon

5 km 10 km Half Marathon
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