Lake Forest

Half Marathon Calendar near Lake Forest 2025-2026

Name: OC Marathon
Start: 2026-05-02
End: 2026-05-03
Location: Costa Mesa

Explore the top half marathons near Lake Forest for 2025-2026! We've gathered 45 exciting races in the area. Check out our detailed list below to find your next local race.

May 2026

May

2-3

Sa - Su

OC Marathon

Costa Mesa | 12 mi from Lake Forest

5 km Half Marathon Marathon

May

Saturday

O'Neill Park Trail Races

Rancho Santa Margarita | 5 mi from Lake Forest

Trail Run 10 km Half Marathon ... Marathon 50 km

May

Monday

Laguna Hills Memorial Day Half Marathon

Laguna Hills | 3 mi from Lake Forest

3 mi 6 mi 13 mi

October 2026

Oct

Saturday

Caspers Trail Races

San Juan Capistrano | 10 mi from Lake Forest

Trail Run 10 km Half Marathon ... Marathon 50 km

November 2026

Nov

Saturday

Saddleback Marathon

Silverado | 7 mi from Lake Forest

Trail Run 10 km Half Marathon Marathon

Distance (km)

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