Half Marathon Races in California

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

289 upcoming half marathon races found in California

Upcoming Half Marathon Races in California

Half Marathon+10

Nov 8

2026 Silver Strand Half Marathon, 10 Miler, 12K & 5K

Sun, November 8, 2026

Coronado, CA

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Island Half Marathon+5

Apr 17

Alameda Island Running Festival

Sat, April 17, 2027

Alameda, CA

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88 MPH Sprint 5K MORNING RUN+5

Oct 17

Back to the Future: 88 MPH Dash 5K, 10K & Half

Sat, October 17, 2026

Canoga Park, CA

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Half Marathon+5

Nov 7

Beer City Half™ OC

Sat, November 7, 2026

Santa Ana, CA

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50K+3

Oct 11

Bizz Johnson

Sun, October 11, 2026

Susanville, CA

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5K+2

Aug 22

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

Sun, August 22, 2027

Long Beach, CA

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5K: The Gobble Dash+2

Nov 13

Camp Turkey Terror: After Dark- Friday the 13th Turkey Trot: 5K. 10K. Half Marathon by Califlow Runs

Fri, November 13, 2026

Long Beach, CA

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Catalina Island Half Marathon+3

Nov 14

Catalina Island Half-Marathon & 10K

Sat, November 14, 2026

Avalon, CA

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Champion Mine Trail Race Half Marathon+2

Oct 11

Champion Mine Trail Race

Sun, October 11, 2026

Nevada City, CA

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5K+3

Nov 1

Día de Muertos - Viva la Vida - 5K, 10K, and Half Marathon by Califlow Runs

Sun, November 1, 2026

Long beach, CA

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HALF MARATHON+3

Oct 24

DIA DE LOS MUERTOS HALF MARATHON & 5K RUN/WALK (BAKERSFIELD)

Sat, October 24, 2026

Bakersfield, CA

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4 Mi+6

May 23

Diablo Trail Run

Sun, May 23, 2027

Clayton, CA

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Fall Classic Half Marathon+2

Oct 18

Fleet Feet Fall Classic - Trail October 18th, 2026

Sun, October 18, 2026

Chico, CA

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5K+4

Nov 22

Friendsgiving: Turkey Trot 5K, 10K, Half Marathon by Califlow Runs

Sun, November 22, 2026

Long Beach, CA

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Green Valley Lake 5k+2

Aug 7

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

Sat, August 7, 2027

Green Valley Lake, CA

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5k+2

Nov 21

Harvest Hustle – 5K, 10K, Half Marathon

Sat, November 21, 2026

Lake View Terrace, CA

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5k Trail Run/Walk+2

Oct 17

Heart of Cool Trail Run

Sat, October 17, 2026

Cool, CA

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5K+3

Nov 14

Huffin for the Stuffin- Turkey Trot 5K, 10K, & Half Marathon

Sat, November 14, 2026

Long Beach, CA

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5K+2

Dec 25

Jingle All the Way - Christmas Day 5K, 10K, Half Marathon, Kids Dash by Califlow Runs

Fri, December 25, 2026

Long Beach, CA

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Half Marathon+3

Oct 4

Judgment Day Half Marathon, 10K & 5K Run/Walk

Sun, October 4, 2026

Bakersfield, CA

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8K+7

Nov 7

Lake Chabot Trail Run

Sat, November 7, 2026

Castro Valley, CA

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5K+2

Dec 31

Last Dash Before Midnight 5K, 10K, & Half Marathon by Califlow Runs

Thu, December 31, 2026

Long Beach, CA

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5K+2

Jul 24

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

Sat, July 24, 2027

Long Beach, CA

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Half Marathon+13

Oct 24

Malibu Moves: Half Marathon, 10K, 5K, 1-Mi & 1K

Sat, October 24, 2026

Malibu, CA

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5K+2

Dec 6

Merry Miles- 5K, 10K, and Half Marathon by Califlow Runs

Sun, December 6, 2026

Long Beach, CA

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Half Marathon+7

Oct 4

Peace Officer Memorial Run

Sun, October 4, 2026

Modesto, CA

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Turtle Bay Run Half Marathon+2

Oct 4

Redding Breakfast Lions Turtle Bay Run 2026

Sun, October 4, 2026

Redding, CA

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5 mile+6

Aug 14

Redwood (Summer) Trail Run

Sat, August 14, 2027

Oakland, CA

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5k+2

Dec 26

Ring Out the Old – 5K, 10K, Half Marathon

Sat, December 26, 2026

Encino, CA

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Run by the Sea 4k+2

Oct 4

Run by the Sea

Sun, October 4, 2026

Santa Cruz, CA

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