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Upcoming Half Marathon Races Near Ontario, CA

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Miles for Hope logo

Miles for Hope

Roseville, CA

Saturday, October 17th, 2026

Featured
10K
5K
View details for race Miles for Hope
World Health Day: 5K 10K Half Marathon Running for a Better World by Califlow Runs logo

World Health Day: 5K 10K Half Marathon Running...

Long Beach, CA

Sunday, April 4th, 2027

5K
10K
Half
View details for race World Health Day: 5K 10K Half Marathon Running for a Better World by Califlow Runs
Run for the Planet -An Earth Day Run by CaliFlow Runs - 5K, 10K, Half Marathon logo

Run for the Planet -An Earth Day Run by CaliFlo...

Long beach, CA

Saturday, April 17th, 2027

5K
10K
Half
View details for race Run for the Planet -An Earth Day Run by CaliFlow Runs - 5K, 10K, Half Marathon
Coffee Lover Run LOS ANGELES logo

Coffee Lover Run LOS ANGELES

Los Angeles, CA

Saturday, April 24th, 2027

5K
10K
Half
View details for race Coffee Lover Run LOS ANGELES
The Hoag OC Marathon Running Festival logo

The Hoag OC Marathon Running Festival

Costa Mesa, CA

Saturday, May 1st, 2027

5K
Half
Marathon
View details for race The Hoag OC Marathon Running Festival
Run, Fiesta, Repeat - Cinco de Mayo 5K, 10K, & Half Marathon logo

Run, Fiesta, Repeat - Cinco de Mayo 5K, 10K, & ...

Long Beach, CA

Saturday, May 1st, 2027

5K
10K
Half
Fast
View details for race Run, Fiesta, Repeat - Cinco de Mayo 5K, 10K, & Half Marathon
May the 4th be with You- The Empire Strides Back 5K, 10K, & Half Marathon by Califlow Runs logo

May the 4th be with You- The Empire Strides Bac...

Long Beach, CA

Sunday, May 2nd, 2027

5K
10K
Half
View details for race May the 4th be with You- The Empire Strides Back 5K, 10K, & Half Marathon by Califlow Runs
2027 OC Marathon logo

2027 OC Marathon

Newport Beach, CA

Sunday, May 2nd, 2027

Marathon
Half
View details for race 2027 OC Marathon
Long Beach Mother's Day Bloom & Zoom 5K, 10K, Half Marathon by Califlow Runs logo

Long Beach Mother's Day Bloom & Zoom 5K, 10K, H...

Long Beach, CA

Sunday, May 9th, 2027

5K
10K
Half
View details for race Long Beach Mother's Day Bloom & Zoom 5K, 10K, Half Marathon by Califlow Runs
Pre Reg 2027 Wrigley River Run & Tadpole Trot Presented by Long Beach Clinical Trials logo

Pre Reg 2027 Wrigley River Run & Tadpole Trot P...

Long Beach, CA

Saturday, June 5th, 2027

10 Miles
Half
10K
View details for race Pre Reg 2027 Wrigley River Run & Tadpole Trot Presented by Long Beach Clinical Trials
Wrigley River Run & Tadpole Trot logo

Wrigley River Run & Tadpole Trot

Long Beach, CA

Saturday, June 5th, 2027

10 Miles
Half
10K
View details for race Wrigley River Run & Tadpole Trot
SuperHero - Runbelievable - 5K. 10K. Half Marathon by Califlow Runs logo

SuperHero - Runbelievable - 5K. 10K. Half Marat...

Long Beach, CA

Sunday, June 6th, 2027

5K
10K
Half
View details for race SuperHero - Runbelievable - 5K. 10K. Half Marathon by Califlow Runs
Summer Solstice Run : 5K.10K. Half Marathon –by Califlow Runs logo

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

Long Beach, CA

Saturday, June 19th, 2027

5K
10K
Half
View details for race Summer Solstice Run : 5K.10K. Half Marathon –by Califlow Runs
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