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Half Marathon Calendar near Lake Forest 2026-2027

Monthly updates for Lake Forest

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

Explore the top half marathons near Lake Forest for 2026-2027! We've gathered 32 exciting races in the area. Check out our detailed list below to find your next local race.

December 2026
Dec
20
Su

Santa’s Reindeer Run Half Marathon

3 mi 6 mi 13 mi
January 2027
Jan
1
Fr

Run In The New Year Half Marathon

5 km 10 km 13 mi
Jan
9
Sa

Citrus Heritage Run

5 km 10 km Half Marathon
Jan
16
Sa

Define Your Glow Half Marathon

5 km 10 km 13 mi
Jan
23-24
Sa - Su

Socal Spartan Event Weekend

Obstacle Run 5 km 10 km Half Marathon
February 2027
Feb
7
Su

Surf City Marathon

5 km 13 mi 26 mi
Feb
7
Su

Galentine's Run: Besties Run Together

5 km 10 km Half Marathon
Feb
13
Sa

The HEART RUN Half Marathon

5 km 10 km 13 mi
Feb
27
Sa

SOCAL River Marathon

3 mi 6 mi 13 mi 26 mi
March 2027
Mar
6
Sa

Disco Miles: Beachfront Boogie

5 km 10 km 13 mi
May 2027
May
1-2
Sa - Su

OC Marathon

5 km 13 mi 26 mi
May
15
Sa

O'Neill Park Trail Races

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