California Triathlon Calendar 2025-2026

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Explore the best triathlons in California for 2025-2026! Our updated list features 751 exciting races across the region. Find your next race in California below and join the running community at these great events!

March 2025
Mar
9
Sunday

Pinch Me I'm Running Half Marathon

5 km 10 km 13 mi
Mar
9
Sunday

Rodeo Run 10K

5 km 10 km
Mar
9
Sunday

Tesoro Viejo Spring Classic Half Marathon

Trail Run 5 km 10 km 13 mi
Mar
9
Sunday

Zoom Angel Island

Trail Run 5 mi 10 mi 15 mi
Mar
9
Sunday

Run for the Gold - Half Marathon

5 km 10 km 13 mi
Mar
9
Sunday

Artesa Wine Run 5k

5 km
Mar
9
Sunday

Fullerton 5k

5 km
Mar
9
Sunday

Foggy Bottom Milk Run

2 mi 4 mi 10 mi
Mar
14-17
Fr - Mo

The Rattlesnake Ramble

Trail Run 5 km 10 km 13 mi
Mar
15
Saturday

Nine Trails 35 Mile Endurance Run

Trail Run 17 mi 35 mi
Mar
15
Saturday

Old West Trail Runs

Trail Run 13 mi 26 mi 50 km
Mar
15
Saturday

Ruck a Chuck 50K

Trail Run 50 km
Mar
15
Saturday

Gabrielino 50k

Trail Run 50 km
Mar
15
Saturday

Santa Barbara Nine Trails

Trail Run 17 mi 35 mi
Mar
15
Saturday

Folsom Lake Southside Trail Run

Trail Run
Mar
15-16
Sa - Su

Shamrock'n Weekend

5 km 10 km 13 mi
Mar
15
Saturday

Zoom San Francisco

5 km 10 km 13 mi
Mar
15
Saturday

Fort Bragg Whale Run

5 km 10 km 13 mi
Mar
15
Saturday

The Rocky Hill Triathlon

Triathlon
Mar
15
Saturday

San Diego Leprechaun Run

5 km
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