Upcoming Half Marathon Races Near Winchester, CA

Name: Green Valley Lake 5k/10k/& Half Marathon
Start: 2026-08-01
End: 2026-08-01
Location: Green Valley Lake

Beer City Half OC

Santa Ana, CA

Saturday, November 1st, 2025

Featured

Half

10K

Trail

View details for race Beer City Half OC

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Temecula Half Marathon, 10K, 5K

Temecula, CA

Sunday, November 2nd, 2025

Half

10K

View details for race Temecula Half Marathon, 10K, 5K

Turkey Trot 5k, 10k, 15k, Half Marathon

Irvine, CA

Sunday, November 30th, 2025

15K

Half

View details for race Turkey Trot 5k, 10k, 15k, Half Marathon

Reindeer Run 5k, 10k, 15k, Half Marathon

Riverside, CA

Sunday, December 21st, 2025

10K

15K

View details for race Reindeer Run 5k, 10k, 15k, Half Marathon

San Diego 50 & Trail Runs

Escondido, CA

Saturday, January 10th, 2026

Ultra

Marathon

Half

Trail

Fast

View details for race San Diego 50 & Trail Runs

Citrus Heritage Run

Riverside, CA

Saturday, January 10th, 2026

Half

10K

View details for race Citrus Heritage Run

2026 Disneyland® Half Marathon Weekend presente...

Anaheim, CA

Friday, January 30th, 2026

10K

Half

View details for race 2026 Disneyland® Half Marathon Weekend presented by HONDA

Teaching & Learning Collaborative Charity Group...

Anaheim, CA

Friday, January 30th, 2026

10K

Half

View details for race Teaching & Learning Collaborative Charity Group Registration (2026 Disneyland® Half Marathon Weekend)

Palm Desert 1/2 Marathon & 5K

Palm Desert, CA

Sunday, February 15th, 2026

Half

Fast

View details for race Palm Desert 1/2 Marathon & 5K

Bedrock Valley Trail Runs

Hemet, CA

Saturday, April 11th, 2026

Marathon

Half

15K

Trail

Fast

View details for race Bedrock Valley Trail Runs

The Hoag OC Marathon Running Festival

Costa Mesa, CA

Saturday, May 2nd, 2026

Half

Marathon

View details for race The Hoag OC Marathon Running Festival

The 2026 Hoag OC Marathon Running Festival (Exp...

Costa Mesa, CA

Saturday, May 2nd, 2026

Half

Marathon

View details for race The 2026 Hoag OC Marathon Running Festival (Expo Registration)

Laguna Hills Memorial Day Half Marathon, 5K & 10K

Laguna Hills, CA

Monday, May 25th, 2026

Half

10K

View details for race Laguna Hills Memorial Day Half Marathon, 5K & 10K

71st Annual Fontana Days Run

Fontana, CA

Saturday, June 6th, 2026

Half

View details for race 71st Annual Fontana Days Run

Green Valley Lake 5k/10k/& Half Marathon

Green Valley Lake, CA

Saturday, August 1st, 2026

10K

Half

Trail

View details for race Green Valley Lake 5k/10k/& Half Marathon

Explore more in Winchester, CA

Distances:

5K 10K Half Marathon Marathon

Months:

November December January

Tags:

Trail Boston Qualifiers Fast Courses

State:

All California races

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