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California Trail Running Calendar 2026-2027

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Monthly updates for California

Get new running races (and updates) in your inbox every month.

Explore the best trail runs in California for 2026-2027! Our updated list features 360 exciting races across the region. Find your next race in California below and join the running community at these great events!

April 2026
Apr
4
Sa

Billy Goat Mountain Climb

Trail Run 10 km 13 mi 17 mi
Apr
4
Sa

Golden Gate Headlands Marathon

Trail Run 10 km Half Marathon Marathon
Apr
4
Sa

Diablo Trails Challenge

Trail Run 5 km 10 km Half Marathon 50 km
Apr
4
Sa

American River Endurance Run

Trail Run 10 mi 25 mi 50 mi
Apr
4
Sa

Rock It in El Moro Canyon

Trail Run 6 km 10 mi
Apr
4
Sa

Merced River Canyon Run

Trail Run 5 mi 9 mi
Apr
4
Sa

ABWR Half Marathon - Glendale

Trail Run 5 km 10 km 15 km 13 mi
Apr
4
Sa

Santa Barbara Tough Enough

Trail Run 59 mi
Apr
4
Sa

OC Trail Runners Group Run

Trail Run 5 mi
Apr
4
Sa

Billy Goat Half Marathon Climb

Trail Run 10 km 13 mi 17 mi
Apr
11
Sa

Nature Made Great Race: Half Marathon

Trail Run 5 km 10 km ... 10 mi 13 mi
Apr
11
Sa

Run With The Burros

Trail Run 5 mi 10 mi 18 mi 26 mi
Apr
11
Sa

Romancing the Island Half Marathon

Trail Run 10 km Half Marathon
Apr
11
Sa

Lake Sonoma 100K

Trail Run 13 mi 50 km 100 km
Apr
11-12
Sa - Su

Bedrock Valley Trail Runs

Trail Run 5 km 10 km ... 13 mi 26 mi
Apr
11
Sa

Oriflamme Trail Run

Trail Run 50 km
Apr
11
Sa

Lake Chabot Trail Run

Trail Run 2 mi 3 mi ... 26 mi 31 mi
Apr
11
Sa

Wild Flowers 10k

Trail Run 10 km
Apr
11
Sa

Magnolia Magic River Trail Run

Trail Run 5 km 7 mi ... Marathon 50 km
Apr
12
Su

Calistoga Mountain Run

Trail Run
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