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Triathlon Calendar near San Mateo 2025-2026

Explore the top triathlons near San Mateo for 2025-2026! We've gathered 87 exciting races in the area. Check out our detailed list below to find your next local race.

August 2025
Aug
9
Saturday

Alameda 10-Miler

8 km 10 mi
Aug
16
Saturday

Beer City Slam

5 km 10 km 13 mi
Aug
16
Saturday

Almaden Hills Trail Run - Summer

Trail Run 5 km 10 km ... 26 mi 50 km
Aug
16
Saturday

Tamalpa Headlands 50K

Trail Run 50 km
Aug
16
Saturday

Mission Bay Find-Your-Way 10K San Francisco

5 km 10 km
Aug
16
Saturday

Redwood (Summer) Trail Run

Trail Run 5 mi 13 mi ... 26 mi 50 km
Aug
16
Saturday

Beer City Half Marathon

5 km 10 km 13 mi
Aug
16
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Aug
23
Saturday

We Run Oakland: For Our Children

5 km
Aug
23
Saturday

Double Dipsea

Trail Run 13 mi
Aug
23
Saturday

Envirosports - Angel Island Half Marathon

Trail Run 10 km 13 mi
Aug
30
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Aug
31
Sunday

Crystal Springs Trail Run

Trail Run 8 km 13 mi ... 26 mi 50 km
September 2025
Sep
6
Saturday

Stevens Creek Striders Reservoir Run

Trail Run 2 mi 11 km 13 mi
Sep
7
Sunday

Berkeley Half

13 mi 26 mi
Sep
7
Sunday

Diplo's Run Club

5 km
Sep
13
Saturday

South Hills Single Track Trail Run - Summer

Trail Run 5 km 10 km ... 26 mi 50 km
Sep
13
Saturday

Berkeley Trail Adventure

Trail Run 10 km 13 mi 35 km 50 km
Sep
13
Saturday

The Best Races - San Francisco

5 km 10 km 13 mi
Sep
20
Saturday

Rocky Ridge Trail Half Marathon

Trail Run 5 km 10 km 13 mi
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