California Triathlon Calendar 2025-2026

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Explore the best triathlons in California for 2025-2026! Our updated list features 881 exciting races across the region. Find your next race in California below and join the running community at these great events!

July 2026
Jul
4
Saturday

Palisades Will Rogers 5K Run

5 km
Jul
18-19
Sa - Su

Napa to Sonoma Half Marathon

5 km 21 km
Jul
18-19
Sa - Su

San Clemente Ocean Festival

Multisport
Jul
18
Saturday

Great American Triathlon

Triathlon
Jul
18
Saturday

Hot to Trot Half Marathon - Los Angeles

Trail Run 5 km 10 km 15 km 21 km
Jul
25
Saturday

Lost Sierra Endurance Race

Trail Run 25 km 50 km 100 km
Jul
25
Saturday

Elder Creek Night Runs

Trail Run 9 mi 13 mi 30 km 50 km
Jul
27-29
Mo - We

Badwater 135

Trail Run 135 mi
August 2026
Aug
2
Sunday

Skyline 50k Endurance Run

Trail Run
Aug
22
Saturday

We Run Oakland: For Our Children

5 km
Aug
29-30
Sa - Su

Norcal Spartan Event Weekend

Obstacle Run 5 km 10 km
Aug
30
Sunday

BRA Run - Los Angeles

5 km 13 km
September 2026
Sep
12
Saturday

Emerald Bay Trail Run

Trail Run 7 mi
October 2026
Oct
3
Saturday

Signal Peak Trail Runs

Trail Run 24 mi 50 km
Oct
3
Saturday

Angeles Crest 100 Mile Endurance Run

Trail Run 100 mi
Oct
18
Sunday

Beverly Hills Run of the Stars

5 km
November 2026
Nov
7
Saturday

Saddleback Marathon

Trail Run 10 km 21 km 42 km
Nov
26
Thursday

Plymouth Rock n Run

5 km 10 km
March 2027
Mar
1
Monday

Screenland 5K

5 km
Mar
21-22
Su - Mo

Bakersfield Marathon

6 km 10 km 21 km 42 km
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