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Triathlon Calendar near Orinda 2025-2026

Explore the top triathlons near Orinda for 2025-2026! We've gathered 105 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
13
Saturday

Hark the Herald Half Marathon

Trail Run 10 km 13 mi
Dec
13
Saturday

Holiday Hustle 10K Walnut Creek

5 km 10 km
Dec
13
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Dec
27
Saturday

Brazen Almost New Year's Eve

5 km 10 km 13 mi
Dec
27
Saturday

Brazen New Year's Eve

Trail Run 5 km 10 km 13 mi
Dec
27
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
January 2026
Jan
1
Thursday

Brazen New Year's Day

Trail Run 5 km 10 km 13 mi
Jan
17
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Jan
24
Saturday

Coyote Hills Run

Trail Run 5 km 10 km 13 mi
Jan
31
Saturday

Race to the Flagpole

5 km 10 km
February 2026
Feb
14
Saturday

Bay Breeze - San Leandro

Trail Run 5 km 10 km 13 mi
Feb
28
Saturday

Victory

5 km 10 km 13 mi
March 2026
Mar
1
Sunday

Livermore Valley Half Marathon

5 km 13 mi
Mar
20-22
Fr - Su

Oakland Marathon

5 km 10 km 13 mi 26 mi
Mar
28
Saturday

Western Pacific Marathon

Trail Run 5 km 10 km 13 mi
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 13 mi 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 13 mi
Apr
18
Saturday

Badger Cove Half Marathon

Trail Run 5 km 10 km 13 mi
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