California Trail Running Calendar 2025-2026

Header image

Explore the best trail runs in California for 2025-2026! Our updated list features 775 exciting races across the region. Find your next race in California below and join the running community at these great events!

May 2025
May
2-4
Fr - Su

Coyote Two Moon

Trail Run 10 km 30 km ... 100 km 100 mi
May
2-3
Fr - Sa

Run4Kids Ultra Running Party

Backyard Ultra 26 mi 6 hr ... 100 mi 24 hr
May
2
Friday

Cinco de Mile - Fresno

2 mi 3 mi 5 mi
May
3
Saturday

Dingneng Wang

Trail Run 26 mi
May
3
Saturday

Hacienda Hills Trail Run - Spring

Trail Run 5 km 10 km ... 26 mi 50 km
May
3
Saturday

Nurses Rock

5 km 10 km
May
3-4
Sa - Su

The Hoag OC Marathon

5 km 13 mi 26 mi
May
3
Saturday

Miwok 100K

Trail Run 100 km
May
3
Saturday

Cinco de Mayo Half Marathon - Long Beach

5 km 10 km 15 km 13 mi
May
3
Saturday

Folsom Lake Trail Run

Trail Run 10 km 13 mi 35 km 50 km
May
3-4
Sa - Su

Norcal Deka Fit & Ultra

Obstacle Run 5 km
May
3
Saturday

Santa Clara Find-Your-Way 10K

5 km 10 km
May
3
Saturday

Kerman Almond Festival Scholarship Fun Run

5 km
May
3
Saturday

Cinco de Mayo

5 km
May
3
Saturday

Run, Fiesta, Repeat - Half Marathon

5 km 10 km 13 mi
May
3
Saturday

Santa Fe Springs 5K Fun Run/Walk

5 km
May
3
Saturday

Mindful Miles 5K

5 km
May
3
Saturday

Viking Run

5 km
May
3
Saturday

Abrazo 10K Run

5 km 10 km
May
3
Saturday

Red Hills Ramble

Trail Run 10 km 15 km 30 km
Articles
The Beauty of the Easy Run — Why slowing down might be the smartest thing you do for your running
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series
Stride with Confidence: A Comprehensive Guide to Saucony Running Shoes