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Running 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 running races near Lake Forest for 2026-2027! We've gathered 124 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons Fitness Races
December 2026
Dec
19
Sa

The Jingle Bell Dash Half Marathon

3 mi 6 mi 13 mi
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
21
Su

Orange County Miles for Melanoma 5K

5 km
Feb
27
Sa

SOCAL River Marathon

3 mi 6 mi 13 mi 26 mi
Feb
28
Su

BRAVE Race

5 km 10 km
March 2027
Mar
6
Sa

Disco Miles: Beachfront Boogie

5 km 10 km 13 mi
Mar
20
Sa

Tough Mudder Lake Elsinore

Obstacle Run 5 km 15 km
Mar
20
Sa

Tough Mudder - Los Angeles

Obstacle Run 5 km 15 km
Mar
20
Sa

Get Your Rear in Gear - Orange County

5 km
April 2027
Apr
10
Sa

Run Seal Beach

5 km 10 km
Apr
25
Su

Orange County Multi-Sport Festival

Multisport
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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