Half Marathon Races in California

Find upcoming half marathon races in California — with dates, locations, and direct registration links.

284 upcoming half marathon races found in California

Upcoming Half Marathon Races in California

Half Marathon+6

Aug 15

Beer City Half™ SLAM

Sat, August 15, 2026

Fremont, CA

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5K+3

Aug 15

Running-10K - Individual Age group/open

Sat, August 15, 2026

long beach, CA

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5 mile+6

Aug 15

Redwood (Summer) Trail Run

Sat, August 15, 2026

Oakland, CA

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Neon Grid 5K+2

Aug 15

The TRON Night Run: Neon Grid 5K & 10K & Half Marathon

Sat, August 15, 2026

Canoga Park, CA

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Half marathon+3

Aug 15

Summer Sensation 5k, 10k, 15k, Half Marathon

Sat, August 15, 2026

long beach, CA

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5K+2

Aug 16

Tiki Run: Paradise Run 5K, 10K, & Half Marathon by Califlow Runs

Sun, August 16, 2026

Long Beach, CA

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5K+3

Aug 16

Running-Half marathon - Individual Age group/open

Sun, August 16, 2026

Ventura Beach, CA

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5K+2

Aug 16

Never Say Die Run 5K. 10K. Half Marathon An 80s Adventure Movie Inspired Race

Sun, August 16, 2026

Long Beach, CA

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5K+3

Aug 16

The The Wheely Fast Hamster Run 5K, 10K, Half Marathon by Califlow Runs

Sun, August 16, 2026

Long Beach, CA

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5K+2

Aug 16

Never Say Die Run 5K. 10K. Half Marathon An 80s Nostalgia Adventure Run

Sun, August 16, 2026

Long Beach, CA

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5K+2

Aug 16

Alien Invasion Man-5K 10K & Half Marathon - Health is Wealth Expo

Sun, August 16, 2026

Long Beach, CA

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30k+2

Aug 22

Santa Cruz Trail Run

Sat, August 22, 2026

Felton, CA

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10K+3

Aug 22

Summer Breeze 5k, 10k, 15k, Half Marathon

Sat, August 22, 2026

long beach, CA

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Half marathon+3

Aug 22

Running-10K - Individual Age group/open

Sat, August 22, 2026

long beach, CA

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5K+2

Aug 23

Californian Dreamin 5K, 10K, & Half Marathon by Califlow Runs

Sun, August 23, 2026

Long Beach, CA

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5k+3

Aug 23

One Love Run – 5K, 10K, 10M, and Half Marathon

Sun, August 23, 2026

Long Beach, CA

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8K+6

Aug 29

SPASM Crystal Springs Trail Run

Sat, August 29, 2026

Woodside, CA

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5K+3

Aug 29

Night of the Running Dead 5K, 10K, 1 Miler, Half Marathon SummerWeen Series by Califlow Runs

Sat, August 29, 2026

Long Beach, CA

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8K+6

Aug 30

SPASM Crystal Springs Trail Run

Sun, August 30, 2026

Woodside, CA

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Half marathon+3

Sep 5

Running-10K - Individual Age group/open

Sat, September 5, 2026

long beach, CA

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FIESTA HALF MARATHON+3

Sep 5

FIESTA HALF MARATHON & 10K - BAKERSFIELD

Sat, September 5, 2026

Bakersfield, CA

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10K+3

Sep 5

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

Sat, September 5, 2026

long beach, CA

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FIESTA HALF MARATHON+3

Sep 6

FIESTA HALF MARATHON & 10K - BAKERSFIELD

Sun, September 6, 2026

Bakersfield, CA

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Half Marathon+1

Sep 6

Mammoth Bar Trail Runs

Sun, September 6, 2026

Auburn, CA

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4 Mi+6

Sep 6

Diablo Trail Run

Sun, September 6, 2026

Clayton, CA

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10K RUN+4

Sep 6

FIESTA HALF MARATHON, 10K & MILE RUN - FRESNO

Sun, September 6, 2026

Fresno, CA

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5k+3

Sep 6

Pirates Plunder – 5K, 10K, 10-miler, and Half Marathon

Sun, September 6, 2026

Long Beach, CA

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Half marathon+3

Sep 7

Running-10K - Individual Age group/open

Mon, September 7, 2026

long beach, CA

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15K+3

Sep 7

Running-5K - Individual Age group/open

Mon, September 7, 2026

long beach, CA

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Kids Dash (400-yard dash)+4

Sep 7

Long Beach Labor Day Run - Merging Forces 5K, 10K, Half Marathon, 1 Miler, Kids Dash

Mon, September 7, 2026

Long Beach, CA

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