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Trail Running Calendar near Brea 2025-2026

Explore the top trail runs near Brea for 2025-2026! We've gathered 130 exciting races in the area. Check out our detailed list below to find your next local race.

March 2026
Mar
7
Saturday

Pasadena Triathlon

Triathlon
Mar
8
Sunday

Los Angeles Marathon

26 mi
Mar
14
Saturday

Nine Trails 35 Mile Endurance Run

Trail Run 17 mi 35 mi
Mar
28-29
Sa - Su

Long Beach Half Marathon

5 km 10 km 13 mi
Mar
28
Saturday

Run Seal Beach

5 km 10 km
April 2026
Apr
4
Saturday

Billy Goat Mountain Climb

Trail Run 10 km 13 mi 17 mi
May 2026
May
2-3
Sa - Su

The Hoag OC Marathon

5 km 13 mi 26 mi
May
23-24
Sa - Su

Nanny Goat

Trail Run 6 hr 12 hr 100 mi 24 hr
November 2026
Nov
7
Saturday

Saddleback Marathon

Trail Run 10 km 13 mi 26 mi
Nov
26
Thursday

Plymouth Rock n Run

5 km 10 km
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