Half Marathons in California — 2026

There are 226 half marathons in California scheduled for 2026. The next is the Pirates Plunder – 5K, 10K, 10-miler, and Half Marathon in Long Beach on September 6. California half marathons run primarily September through August.

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

Sun, Sep 6 · Long Beach, CA Long Beach

5k10K10-Miler +1

From $29.5 Open Closing Soon

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Run for Mental Health 5K/10K/13.1 SACRAMENTO

Sat, Sep 12 · Sacramento, CA Sacramento

Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Closed

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Beer City Half™ Bishop Ranch

Sat, Sep 12 · San Ramon, CA San Ramon

Beat The Beast Beer MileBeer Stroll5k +4

From $25 Open Closing Soon

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National Chocolate Day: Run for Chocolates 5K/10K/13.1 SACRAMENTO

Sat, Sep 12 · Sacramento, CA Sacramento

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration +3

From $30 Closed

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Run for Mental Health 5K/10K/13.1 SAN DIEGO

Sat, Sep 12 · San Diego, CA San Diego

Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open Closing Soon

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AFE Foundation 2026 Step Up for Moms: Global Baton Relay

Sat, Sep 12 · Vista, CA Vista

AFE Foundation: 2026 Step Up for Moms: Global Baton RelayStep Up For Moms: Carry the Light Global Relay - Adult - Kids 12 and Under

From $25 Open Closing Soon 29 spots left

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Run for Mental Health 5K/10K/13.1 SAN FRANCISCO

Sat, Sep 12 · San Francisco, CA San Francisco

Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open Closing Soon

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Run for Mental Health 5K/10K/13.1 LOS ANGELES

Sat, Sep 12 · Los Angeles, CA Los Angeles

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Open Closing Soon

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National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN FRANCISCO

Sat, Sep 12 · San Francisco, CA San Francisco

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open Closing Soon

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National Chocolate Day: Run for Chocolates 5K/10K/13.1 SAN DIEGO

Sat, Sep 12 · San Diego, CA San Diego

Family 1 Mile Fun RunVirtual Run Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open Closing Soon

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National Chocolate Day: Run for Chocolates 5K/10K/13.1 LOS ANGELES

Sat, Sep 12 · Los Angeles, CA Los Angeles

Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open Closing Soon

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Seasonal Confusion 5K. 10K. Half Marathon by Califlow Runs

Sun, Sep 13 · Long Beach, CA Long Beach

5K10KHalf Marathon

From $38.99 Open Closing Soon

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Rocky Ridge

Sat, Sep 19 · san Ramon, CA san Ramon

5K10KHiker Division +3

From $45 Open

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Jurassic Jaunt – 5K, 10K, 10M, and Half Marathon

Sat, Sep 19 · Long Beach, CA Long Beach

5k10KHalf Marathon +1

From $24.5 Open

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Season of the Witch 5K 10K Half Marathon by Califlow Runs

Sat, Sep 19 · Long Beach, CA Long Beach

5K10KHalf Marathon

From $25 Open

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Run for Coffee 5k / 10k / 13.1 - Roseville

Sat, Sep 19 · Rocklin, CA Rocklin

Run for Coffee 5kRun for Coffee 10kRun for Coffee 13.1

From $35 Open

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Bayside Saved by the Bell 5K, 10K & Half Marathon

Sat, Sep 19 · Canoga Park, CA Canoga Park

Friends Forever 5KTime Out 10KHall Pass Half Marathon +1

From $34.99 Open

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La Noche de las Brujas Run -SummerWeen Series 5K 10K Half by Califlow Runs

Sun, Sep 20 · Long Beach, CA Long Beach

1 Miler5K10K +1

From $28.99 Open

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Alameda Island Running Festival

Sun, Sep 20 · Alameda, CA Alameda

1 Mile Family Fun RunIsland 5k Run / Walk presented by PenumbraIsland 10K Run +1

From $25 Open

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

Sat, Sep 26 · San Diego, CA San Diego

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Closed

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

Sat, Sep 26 · San Francisco, CA San Francisco

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Oktoberfest Run 5K/10K/13.1 SAN FRANCISCO

Sat, Sep 26 · San Francisco, CA San Francisco

Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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Oktoberfest Run 5K/10K/13.1 SACRAMENTO

Sat, Sep 26 · Sacramento, CA Sacramento

Family 1 Mile Fun RunVirtual Run Registration5K Registration +3

From $30 Open

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Run for Donuts 5K/10K/13.1 SACRAMENTO

Sat, Sep 26 · Sacramento, CA Sacramento

Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration (5K/10K/13.1) +3

From $30 Open

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Oktoberfest Run 5K/10K/13.1 SAN DIEGO

Sat, Sep 26 · San Diego, CA San Diego

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Closed

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Oktoberfest Run 5K/10K/13.1 LOS ANGELES

Sat, Sep 26 · Los Angeles, CA Los Angeles

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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

Sat, Sep 26 · Los Angeles, CA Los Angeles

Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open

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The Retro Run – 5K, 10k, 10m, and Half Marathon

Sun, Sep 27 · Long Beach, CA Long Beach

5k10K10-Mile +1

From $24.5 Open Closing Soon

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Tri to Inspire

Sun, Sep 27 · Santa Rosa, CA Santa Rosa

Mini Sprint Triathlon - FamilyMini Sprint Triathlon - Youth (16 & under)Mini Sprint Triathlon - Adult +5

From $45 Open 2 spots left

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Auburn Half Marathon

Sun, Sep 27 · Auburn, CA Auburn

5K12KRemote Runner +1

From $50 Open

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Mean Girls 5K, 10K & Half Marathon

Sat, Oct 3 · Canoga Park, CA Canoga Park

The Burn Book 5KThe Glen Coco 10KThe Full Plastics Half Marathon +1

From $34.99 Open

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Redding Breakfast Lions Turtle Bay Run 2026

Sun, Oct 4 · Redding, CA Redding

Turtle Bay 2 mile Fun RunTurtle Bay 10 KTurtle Bay Run Half Marathon

From $25 Open Closing Soon

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Hallo-Thanks-Mas Dash – 5K, 10K, and Half Marathon

Sun, Oct 4 · San Diego, CA San Diego

5k10KHalf Marathon

From $29.5 Open

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Run by the Sea

Sun, Oct 4 · Santa Cruz, CA Santa Cruz

Run by the Sea 4kRun by the Sea 12kRun by the Sea Half Marathon

From $45 Open

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Peace Officer Memorial Run

Sun, Oct 4 · Modesto, CA Modesto

Kids Fun RunFull Gear Challenge 5K5K +5

From $0 Open Closing Soon 50 spots left

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

Sun, Oct 4 · Bakersfield, CA Bakersfield

5K Run/Walk10K Run/WalkVirtual Half Marathon +1

From $40 Open

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Napa Half Marathon

Sun, Oct 4 · Napa, CA Napa

Quarter Marathon!1/2 Marathon

From $70 Open Closing Soon

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

Sat, Oct 10 · San Mateo, CA San Mateo

Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open

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Coffee Lovers Run 5K/10K/13.1 SACRAMENTO

Sat, Oct 10 · Sacramento, CA Sacramento

Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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Bagel Run 5K/10K/13.1 SAN DIEGO

Sat, Oct 10 · San Diego, CA San Diego

Family 1 Mile Fun Run5K RegistrationVirtual Run Registration +3

From $30 Open

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Bagel Run 5K/10K/13.1 SAN FRANCISCO

Sat, Oct 10 · San Mateo, CA San Mateo

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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

Sat, Oct 10 · San Diego, CA San Diego

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Open

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Bagel Run 5K/10K/13.1 SACRAMENTO

Sat, Oct 10 · Sacramento, CA Sacramento

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration +3

From $30 Open

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Cookie Run 5K/10K/13.1 LOS ANGELES

Sat, Oct 10 · Los Angeles, CA Los Angeles

Family 1 Mile Fun Run5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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

Sat, Oct 10 · Los Angeles, CA Los Angeles

Family Fun Run 1 Mile5K Registration5K/10K/13.1 Eco-Registration (No Shirt) +3

From $30 Open

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Champion Mine Trail Race

Sun, Oct 11 · Nevada City, CA Nevada City

Champion Mine 5K Run/WalkChampion Mine 10K Race/WalkChampion Mine Trail Race Half Marathon

From $35 Open Closing Soon

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Bizz Johnson

Sun, Oct 11 · Susanville, CA Susanville

Express 10KExpress Half Marathon50K +1

From $55 Open Closing Soon

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Fredrick Michael Gibson 5K/10K & Half Marathon Walk/Run for Depression Awareness

Sun, Oct 11 · Simi Valley, CA Simi Valley

Kids Fun Run5K Walk & Strollers5K Run +3

Closed

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Night of the Living Runners – 5K, 10K, 10-Miler, Half Marathon

Sat, Oct 17 · Long Beach, CA Long Beach

5k10K10 Miler +1

From $24.5 Open

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

Sat, Oct 17 · Canoga Park, CA Canoga Park

88 MPH Sprint 5KTwin Pines 10KEnchantment Under the Run Half Marathon +1

From $34.99 Open

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