Upcoming Half Marathon Races In California, US in May, 2026

Name: Blue Moon 5K. 10K. Half Marathon by Califlow Runs
Start: 2026-05-31
End: 2026-05-31
Location: Long Beach

Vibha Bay Area Dream Mile 2026

Fremont, CA

Friday, May 1st, 2026

Featured

Half

10K

View details for race Vibha Bay Area Dream Mile 2026

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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)

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

Long Beach, CA

Saturday, May 2nd, 2026

10K

Half

View details for race The Rebel Run – 5K, 10K, 10M, and Half Marathon

Finish The Ride and Finish The Run Griffith Park

Los Angeles, CA

Saturday, May 2nd, 2026

10K

15K

View details for race Finish The Ride and Finish The Run Griffith Park

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

Long Beach, CA

Sunday, May 3rd, 2026

10K

Half

View details for race May the 4th be with You- The Empire Strides Back 5K, 10K, & Half Marathon

2026 Avenue of the Giants Marathon

Arcata, CA

Sunday, May 3rd, 2026

Marathon

Half

10K

Fast

View details for race 2026 Avenue of the Giants Marathon

CINCO DE MILE HALF MARATHON & OLE 5 QUE - BAKER...

Bakersfield, CA

Sunday, May 3rd, 2026

Fast

View details for race CINCO DE MILE HALF MARATHON & OLE 5 QUE - BAKERSFIELD

The Sasquatch Scramble 5K/10K/Half Marathon (li...

San Francisco, CA

Friday, May 8th, 2026

10K

Half

View details for race The Sasquatch Scramble 5K/10K/Half Marathon (live or virtual)

Beer City Half™ Sacramento

Sacramento, CA

Saturday, May 9th, 2026

Half

10K

View details for race Beer City Half™ Sacramento

Yosemite Half Marathon

Bass Lake, CA

Saturday, May 9th, 2026

Half

View details for race Yosemite Half Marathon

Grizzly Peak Trail Run

Berkeley, CA

Saturday, May 9th, 2026

10K

Half

Ultra

Trail

View details for race Grizzly Peak Trail Run

Happy Mothers Day 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, May 9th, 2026

10K

Half

15K

View details for race Happy Mothers Day 5k, 10k, 15k, Half Marathon

Run for the Rose – 5K, 10K, 10M, and Half Marathon

Long Beach, CA

Sunday, May 10th, 2026

10K

15K

View details for race Run for the Rose – 5K, 10K, 10M, and Half Marathon

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

Long Beach, CA

Sunday, May 10th, 2026

10K

Half

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

The Cobra 5Kai, 10Kai & Half Miyagithon

Canoga Park, CA

Saturday, May 16th, 2026

10K

Half

Fast

View details for race The Cobra 5Kai, 10Kai & Half Miyagithon

La Jolla Half Marathon & 5K

San Diego, CA

Saturday, May 16th, 2026

Half

10K

View details for race La Jolla Half Marathon & 5K

13th Annual Luc's Run

Tuolumne, CA

Saturday, May 16th, 2026

10K

Half

1 Mile

View details for race 13th Annual Luc's Run

Sweet Life Run 5K. 10K. Half Marathon by Califl...

Long Beach, CA

Saturday, May 16th, 2026

10K

Half

View details for race Sweet Life Run 5K. 10K. Half Marathon by Califlow Runs

The Afterlife 5K, 10K, Half Marathon- Night Sum...

Long Beach, CA

Saturday, May 16th, 2026

10K

Half

View details for race The Afterlife 5K, 10K, Half Marathon- Night SummerWeen Series by Califlow Runs

Sutter Buttes Spirit Mountain Run 5K, 10K & Hal...

Sutter, CA

Saturday, May 16th, 2026

10K

Half

View details for race Sutter Buttes Spirit Mountain Run 5K, 10K & Half Marathon

Wild Rose Half Marathon & 5K

Roseville, CA

Saturday, May 16th, 2026

Half

Fast

View details for race Wild Rose Half Marathon & 5K

Beach Dash 5k, 10k, 15k, Half Marathon

Long beach, CA

Sunday, May 17th, 2026

Half

15K

View details for race Beach Dash 5k, 10k, 15k, Half Marathon

The Valley Race – 5k, 10k, and Half Marathon

Van Nuys, CA

Saturday, May 23rd, 2026

10K

Half

View details for race The Valley Race – 5k, 10k, and Half Marathon

PÁLI PEAK TRAIL RUN

Bakersfield, CA

Saturday, May 23rd, 2026

View details for race PÁLI PEAK TRAIL RUN

Run to Remember 5k, 10k, 15k, Half Marathon

Long beach, CA

Saturday, May 23rd, 2026

15K

Half

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

Forever Brave 5k, 10k, 15k, Half Marathon

Valencia, CA

Sunday, May 24th, 2026

Half

15K

View details for race Forever Brave 5k, 10k, 15k, Half Marathon

Memorial Day 5k, 10k, 15k, Half Marathon

Long beach, CA

Monday, May 25th, 2026

15K

Half

View details for race Memorial Day 5k, 10k, 15k, Half Marathon

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

Beer City Half™ San Jose

San Jose, CA

Saturday, May 30th, 2026

Half

10K

View details for race Beer City Half™ San Jose

Cinderella Trail Run

Oakland, CA

Saturday, May 30th, 2026

Half

Ultra

Marathon

Trail

View details for race Cinderella Trail Run

16TH BEACHFRONT RUN

Ventura, CA

Saturday, May 30th, 2026

View details for race 16TH BEACHFRONT RUN

The Great White Chase – 5K, 10K, 10M, and Half ...

Long Beach, CA

Sunday, May 31st, 2026

10K

15K

View details for race The Great White Chase – 5K, 10K, 10M, and Half Marathon

Blue Moon 5K. 10K. Half Marathon by Califlow Runs

Long Beach, CA

Sunday, May 31st, 2026

10K

Half

View details for race Blue Moon 5K. 10K. Half Marathon by Califlow Runs

Explore more in California, US

Distances:

5K 10K Half Marathon Marathon

Months:

April May June

Tags:

Trail Boston Qualifiers Fast Courses

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