Trail Runs in California — 2026

There are 40 trail runs in California scheduled for 2026. The next is the UC San Diego Score-O in La Jolla on October 31. California trail runs run primarily October through August.

Fleet Feet Fall Classic - Trail October 18th, 2026

Sun, Oct 18 · Chico, CA Chico

4 Mile Endurance Challenge4 Mile (Single Loop)Fall Classic Half Marathon

From $40 Closed 60 spots left

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UC San Diego Score-O

Sat, Oct 31 · La Jolla, CA La Jolla

Score-O (Mass start)

From $15 Open Closing Soon

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ZombieRunner Halloween

Sat, Oct 31 · San Jose, CA San Jose

5K (12 yo & under)5K5K (13 - 17 yo) +5

From $25 Open Closing Soon 4 spots left

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Epicpalooza

Sat, Nov 7 · Moorpark, CA Moorpark

Epicpalooza 5KEpicpalooza 10KEpicpalooza Kids 1K

From $25 Open Closing Soon

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Lake Chabot Trail Run

Sat, Nov 7 · Castro Valley, CA Castro Valley

5K8KHalf Marathon +3

From $25 Open Closing Soon 30 spots left

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SLO Ranch Fun Run 5K

Sat, Nov 14 · San Luis Obispo, CA San Luis Obispo

1K Kids Run3K5K

From $10 Open Closing Soon

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Konocti Climb 5K

Sat, Nov 14 · Kelseyville, CA Kelseyville

Konocti Climb 5k

From $55 Open

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ZombieRunner Quarry Lakes

Sat, Nov 14 · Fremont, CA Fremont

5K (13 - 17 yo)5K5K (12 yo & under) +4

From $25 Open

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Catalina Island Half-Marathon & 10K

Sat, Nov 14 · Avalon, CA Avalon

Kids Fun RunCatalina Island 10KCatalina Island Half Marathon +1

From $20 Open 50 spots left

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Zoom Turkey Trot

Thu, Nov 26 · San Jose, CA San Jose

5K (13 - 17 yo)5K (12 yo & under)5K +4

From $25 Open

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The Wild Turkey

Thu, Nov 26 · Granite Bay, CA Granite Bay

5k Race10K Race

From $38 Open Closing Soon

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Running of the Turkeys 5K & 10K Trail Run

Thu, Nov 26 · San Diego, CA San Diego

Running of the Turkeys 5K Trail RunRunning of the Turkeys 10K Trail Run (Runners Only)Virtual Option - Running of the Turkeys 10K +1

From $0 Open 60 spots left

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Auburn Resolution Run

Fri, Jan 1 · Auburn, CA Auburn

Virtual Run - Any distance5k10K +1

From $30 Open

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San Diego 50 & Trail Runs

Sat, Jan 9 · Escondido, CA Escondido

Elevated Youth 1 MilerStroller Trail 5kValley 5M (Youth Under 19) +7

From $15 Open Closing Soon

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SPASM Crystal Springs Trail Run

Sun, Jan 17 · Woodside, CA Woodside

8KHalf Marathon35K +2

From $60 Open

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Hollywood Sign Run | Hike - 8M | 8K | 5K | Kid

Sun, Jan 31 · Los Angeles, CA Los Angeles

P-2.2K Kid RunGriffith Park 5K Trail ChallengeHollywood Sign 8M Run | Hike +1

From $25 Open Closing Soon 55 spots left

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Golden Gate Trail Run

Sat, Feb 6 · Sausalito, CA Sausalito

8KHalf MarathonMarathon +2

From $60 Open 50 spots left

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Dalton Canyon Ultra

Sat, Feb 6 · Glendora, CA Glendora

Dalton Canyon 10K SoloDalton Canyon 50K: 4 Person RelayDalton Canyon Ultra 50K Solo +1

From $65 Open

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FOURmidable

Sat, Feb 13 · Auburn, CA Auburn

FOURmidable 13kFOURmidable 13kFOURmidable Half Marathon + +5

From $40 Open Closing Soon

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Montara Mountain Trail Run

Sat, Feb 20 · Pacifica, CA Pacifica

10K10KHalf Marathon +7

From $60 Open

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Zoom Angel Island

Sun, Feb 28 · Tiburon, CA Tiburon

5 mi5 mi10 mi +3

From $60 Open

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Catalina Island Marathon, 10K, 5K

Sat, Mar 13 · Avalon, CA Avalon

Kids RunKids RunCatalina Island 5K +7

From $25 Open Closing Soon 30 spots left

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Zoom San Francisco

Sat, Mar 13 · San Francisco, CA San Francisco

5K5K5K (12 yo & under) +11

From $25 Open

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VALENCIA Trail Race

Sat, Mar 20 · Valencia, CA Valencia

10K10KHalf Marathon +3

From $67 Open

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Redwood (Spring) Trail Run

Sat, Mar 20 · Oakland, CA Oakland

5K (Accompanying Adults for Children)5K5mi (12 yo & under) +13

From $30 Open

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Rock It in El Moro Canyon 6K & 10 Miler

Sat, Apr 3 · Laguna Beach, CA Laguna Beach

Rock It in El Moro Canyon 6KRock It in El Moro Canyon 6KRock It in El Moro Canyon 10 Miler +1

From $65 Open

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Bedrock Valley Trail Runs

Sat, Apr 3 · Hemet, CA Hemet

Elevated Youth 1MElevated Youth 1MSTAMPEDE 5K +24

From $15 Open

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Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M

Sat, Apr 10 · Agoura Hills, CA Agoura Hills

1 MILE - All AgesUnited Track 1 MILE - All AgesDEENA KASTOR 5K +11

From $32.07 Open 76 spots left

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SPASM Lake Chabot Trail Run

Sat, Apr 17 · Castro Valley, CA Castro Valley

5K8K8K +8

From $0 Open

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Ramona Wine Country 5K

Sat, Apr 17 · Ramona, CA Ramona

Beer Mile (Team Relay)Beer Mile (Team Relay)Beer Mile +7

From $25 Open

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Horseshoe Lake Trail Run

Sat, Apr 24 · Los Gatos, CA Los Gatos

5 mi5 miHalf Marathon +7

From $60 Open

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No Foolin' Foot Race

Sat, Apr 24 · San Carlos, CA San Carlos

1K Kids Course1K Kids Course5K +5

From $20 Closed

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Santa Clarita Trail Race

Sat, May 1 · Santa Clarita, CA Santa Clarita

1-Mile Hike1-Mile Hike5K +16

From $40 Open

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Miwok 100K Trail Race presented by The North Face

Sat, May 1 · Stinson Beach, CA Stinson Beach

Miwok 100KMiwok 100k PLUS 16 week Training PlanMiwok 100k PLUS 16 week Training Plan +5

From $150 Closed 39 spots left

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Grizzly Peak Trail Run

Sat, May 8 · Berkeley, CA Berkeley

10K10KHalf Marathon +7

From $60 Open

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Diablo Trail Run

Sun, May 23 · Clayton, CA Clayton

4 Mi4 Mi10 Mi +7

From $50 Open

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Cinderella Trail Run

Sun, May 30 · Oakland, CA Oakland

8K8KHalf Marathon +7

From $60 Open

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2027 Lake Chabot Trail Challenge (Half Marathon & 5K)

Sun, Jun 6 · Castro Valley, CA Castro Valley

5K Run5K RunHalf Marathon +1

From $40 Open

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Griffith Park Trail Marathon Relay & 8K

Sun, Jun 6 · Los Angeles, CA Los Angeles

Griffith Park 8KGriffith Park 8KMarathon Relay Team (up to 5) +1

From $45 Closed

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San Lorenzo River Trail Run

Sat, Jul 10 · Santa Cruz, CA Santa Cruz

10K10KHalf Marathon +7

From $60 Open

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Redwood (Summer) Trail Run

Sat, Aug 14 · Oakland, CA Oakland

5 mile5 mileHalf Marathon +7

From $60 Open

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