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Trail Running Calendar near Lake Forest 2026-2027

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Explore the top trail runs near Lake Forest for 2026-2027! We've gathered 13 exciting races in the area. Check out our detailed list below to find your next local race.

November 2026
Nov
21
Sa

OC Trail Runners Group Run

Trail Run 7 mi
December 2026
Dec
5
Sa

Into the Wild OC Trail Run

Trail Run 28 km
Dec
12
Sa

Crystal Cove Trail Run

Trail Run 6 km 15 km
March 2027
Mar
21
Su

REACH Foundation Shamrock 'n Run

Trail Run 5 km
April 2027
Apr
3
Sa

Rock It in El Moro Canyon

Trail Run 6 km 10 mi
Monthly updates for Lake Forest

Get new running races (and updates) in your inbox every month.
Apr
24
Sa

Machete Trail Madness 100K

Trail Run 10 km 50 km 100 km
May 2027
May
8
Sa

John Wayne Grit Series - Newport Coast

Trail Run 5 km 25 km 50 km
May
15
Sa

O'Neill Park Trail Races

Trail Run 10 km 13 mi ... 26 mi 50 km
May
29-31
Sa - Mo

Nanny Goat

Trail Run Backyard Ultra 100 mi
July 2027
Jul
24
Sa

Harding Hustle

Trail Run 15 km 30 km 50 km
September 2027
Sep
12
Su

Pacific Coast Triathlon

Trail Run Triathlon Duathlon Sprint 0.5 12 mi Sprint 0.5 12 3 mi Sprint 0.5 12 3 mi Olympic 1500 m 40 km
October 2027
Oct
27-31
We - Su

Machete Muertos 200

Trail Run 10 mi 20 mi ... 100 mi 200 mi
Oct
30
Sa

Halloween Spooktacular 6 Hour Trail Run

Trail Run Backyard Ultra 4 mi
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