Marathons in California — 2026

There are 30 marathons in California scheduled for 2026. The next is the 2026 Humboldt Redwoods Marathon, Half Marathon, 5K in Weott on October 11. California marathons run primarily October.

2026 Humboldt Redwoods Marathon, Half Marathon, 5K

Sun, Oct 11 · Weott, CA Weott

5K Run1/2 MarathonMarathon

From $40 Open Closing Soon

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Lake Evans Triathlon, 5K & 10K

Sun, Oct 18 · Bakersfield, CA Bakersfield

Sprint AquathlonVirtual Aquathlon5K Run +19

From $40 Open Closing Soon

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OC United 2026 Pumpkin Run and Ride

Sat, Oct 24 · Fullerton, CA Fullerton

Pumpkin Run/Walk 5K (General Public)Pumpkin Run 5K - FSD Students, Families & StaffTour de Fullerton - EASY (10 + optional 6 mile road bike ride) +3

From $25 Open

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2026 First Responders 1M 5K 10K 13.1 26.2

Sun, Oct 25 · Los Angeles, CA Los Angeles

1 Mile5K10K +2

From $25 Open

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Two Cities Marathon

Sun, Nov 1 · Fresno, CA Fresno

Kaiser Permanente 5k Gavin Gladding Run/WalkKaiser Permanente 10k Run/WalkJD Food Half Marathon +2

From $45 Open

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2026 Morro Bay Triathlon

Sun, Nov 1 · Morro Bay, CA Morro Bay

5k RunSprintSprint Relay Team +10

From $50 Open

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Mt. Tam Trail Run

Sat, Nov 7 · Stinson Beach, CA Stinson Beach

10KHalf Marathon30K +1

Closed

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2026 Kaiser Permanente Get Fit Festival

Sat, Nov 7 · Irvine, CA Irvine

5K Run/WalkBike Tour36 Mile Team Relay Challenge

From $35 Open

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Bayshore Sprint and 70.4

Sat, Nov 7 · Long Beach, CA Long Beach

Bayshore SprintBayshore 70.4

From $165 Open

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City of Lincoln Huffin' for the Stuffin' Turkey Trot

Thu, Nov 26 · Lincoln, CA Lincoln

Fun Run 5KKids Donut Dash (Ages 4-7)

From $8 Closed 61 spots left

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The Blackhorse Marathon in Honor of MG(R) Sunell

Fri, Dec 11 · Fort Irwin, CA Fort Irwin

5K1/2 MarathonThe Norwegian Foot March +1

From $15 Open

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Woodside Ramble

Sat, Dec 19 · Woodside, CA Woodside

10KHalf Marathon35K +1

Closed

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The Redding Marathon Events

Sun, Jan 17 · Redding, CA Redding

Sundial 5kRedding Marathon RelayRedding Marathon

From $20 Open

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Ventura Marathon

Sun, Feb 21 · Ventura, CA Ventura

1/2 Marathon - Pacer1/2 Marathon1/2 Marathon +7

From $110 Open 20 spots left

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SOCAL River Marathon - 26.2 - 13.1 - 10K - 5K

Sat, Feb 27 · Huntington Beach, CA Huntington Beach

5K5K10K +12

From $40 Open

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2027 SFA Los Angeles Marathon Team

Fri, Mar 5 · Los Angeles, CA Los Angeles

2027 SFA Los Angeles Marathon Team

Closed

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United Health Centers Foundation Fun Run

Sat, Mar 20 · Fresno, CA Fresno

2 Mile Walk2 Mile Walk5k Run +11

From $10 Open

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Release the Kraken 5K. 10K. 18 Miler & 50K

Sat, Apr 3 · Long Beach, CA Long Beach

5K10K18 Miler +1

From $40 Open

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Modesto Marathon

Sun, Apr 4 · Modesto, CA Modesto

Assisted 5K5KVirtual 5K +21

From $45 Open

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Mountains 2 Beach Marathon and Half

Sat, Apr 17 · Ventura, CA Ventura

Kids 1K Fun RunKids 1K Fun Run5k +13

From $25.99 Open 85 spots left

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Millerton Lake Crows Nest Triathlon, 5k & 10k

Sun, Apr 18 · Friant, CA Friant

5kVirtual 5k5k +35

From $45 Closed

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Grapes of Wrath Triathlon, 5k & 10k

Sun, Apr 25 · Delano, CA Delano

5k Run5k Run10k Run +27

From $50 Closed

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The Hoag OC Marathon Running Festival

Sat, May 1 · Costa Mesa, CA Costa Mesa

5K Walk5K Walk5K Run +35

From $0 Open

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2027 Avenue of the Giants Marathon

Sun, May 2 · Arcata, CA Arcata

Avenue of the Giants 10kAvenue of the Giants 10kAvenue of the Giants 1/2 Marathon +3

From $60 Open

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Shadow of the Giants 50k & 20k Run

Sat, Jun 5 · Fish Camp, CA Fish Camp

20K Early Start20k20k +3

From $80 Open 30 spots left

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Huntington Lake Triathlon, 5k & 10k

Sat, Jun 19 · Lakeshore, CA Lakeshore

Virtual 5kVirtual 5k5k+ Run +33

From $50 Closed

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Beer City Half™ Alameda

Sat, Jul 10 · Alameda, CA Alameda

5k5k10k +12

From $0 Open

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Shaver Lake Mile High Triathlon

Sun, Sep 12 · Shaver Lake, CA Shaver Lake

Sprint AquathlonVirtual AquathlonVirtual Aquathlon +39

From $55 Open

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Chupacabra 5K. 10K. 18 Miler & 50K

Sat, Sep 18 · Long Beach, CA Long Beach

5K10K18 Miler +1

From $40 Open

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Keyesville Classic 2027

Sat, Oct 16 · Lake Isabella, CA Lake Isabella

🏃 Keyesville Trail 5K RunSprint Lap Time TrialXC Lite Course +5

From $20 Open 80 spots left

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