Half Marathon Races in California.

Race Through California 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!

Run for Breast Cancer 5K/10K/13.1 LOS ANGELES

Run for Breast Cancer 5K/10K/13.1 SACRAMENTO

Run for Breast Cancer 5K/10K/13.1 SAN DIEGO

SuperHeroes Run 5K/10K/13.1 SAN DIEGO

Run for Breast Cancer 5K/10K/13.1 SAN FRANCISCO

SuperHeroes Run 5K/10K/13.1 SACRAMENTO

SuperHero - Runbelievable - 5K. 10K. Half Marathon by Califlow Runs

SuperHeroes Run 5K/10K/13.1 LOS ANGELES

SuperHeroes Run 5K/10K/13.1 SAN FRANCISCO

2026 Lake Chabot Trail Challenge (Half Marathon & 5K)

WICKED FAST MARATHON & HALF MARATHON SAN DIEGO

Good Vibes Run – 5K, 10K, 10M, and Half Marathon

Old Zoo Half Marathon

Run Juneteenth Day 5K/10K/13.1 LOS ANGELES

Run Juneteenth Day 5K/10K/13.1 SACRAMENTO

Run Juneteenth Day 5K/10K/13.1 SAN DIEGO

Run Juneteenth Day 5K/10K/13.1 SAN FRANCISCO

Sloth Run 5K/10K/13.1 SACRAMENTO

Sloth Run 5K/10K/13.1 LOS ANGELES

Sloth Run 5K/10K/13.1 SAN DIEGO

Sloth Run 5K/10K/13.1 SAN FRANCISCO

Summer Solstice Run : 5K.10K. Half Marathon –by Califlow Runs

Father’s Day Classic – 5K, 10K, 10-Miler, and Half Marathon

Goleta Beach Half Marathon, 10K, 5K, Kid's 1-Mile

Summer time in the LBC 5K, 10K, & Half Marathon by Califlow Runs

Alien Run – 5K, 10K, 10M, and Half Marathon

July 4th Run 5K/10K/13.1 LOS ANGELES

July 4th Run 5K/10K/13.1 SACRAMENTO

July 4th Run 5K/10K/13.1 SAN DIEGO

July 4th Run 5K/10K/13.1 SAN FRANCISCO

Run for Chocolate 5K/10K/13.1 LOS ANGELES

Run for Chocolate 5K/10K/13.1 SACRAMENTO

Run for Chocolate 5K/10K/13.1 SAN FRANCISCO

Run for Chocolate 5K/10K/13.1 SAN DIEGO

Red, White, and Run – 5K, 10K, and Half Marathon

Endless Summer in the LBC 5K, 10K, & Half Marathon by Califlow Runs

LBC Summer Breeze – 5K, 10K, 10M, and Half Marathon

Run for Coffee Lovers 5K/10K/13.1 SAN FRANCISCO

Run for Coffee Lovers 5K/10K/13.1 SAN DIEGO

Run for Coffee Lovers 5K/10K/13.1 SACRAMENTO

Run for Coffee Lovers 5K/10K/13.1 LOS ANGELES

LBC - Good Vibes Run 5K, 10K, & Half Marathon by Califlow Runs

Run for Donuts 5K/10K/13.1 LOS ANGELES

Run for Donuts 5K/10K/13.1 SACRAMENTO

Run for Donuts 5K/10K/13.1 SAN DIEGO

Run for Donuts 5K/10K/13.1 SAN FRANCISCO

BOO-gie Glow Run 5K 10K Half Marathon - SummerWeen Series by Califlow Runs