Trail RunningCalifornia
Trail Running in California
Browse upcoming amateur trail running events and compare dates, locations, and popularity. in California.
Upcoming dates California Community-rated events
Events listed
242
Sport
Trail Running
Area
California
Radius
600 km
This calendar in numbers
This calendar currently lists 242 upcoming events, from Jul 4, 2026 to Aug 29, 2027. October is the busiest month, with 52 events scheduled. Events are spread across 162 different locations; Los Angeles hosts the most (11). Course distances range from 5 km to 160.9 km.
Browse all 242 events by date
July 2026
- HRC Rotary 4th of July 5K Family Fun Run Jul 4
- Liberty Bell 5k Fun Run Jul 4
- Rancho Hills Trail Run Jul 4
- Run To The Beach Trail Run 5 & 10k Jul 4
- We'Re aLL MaD hERe RuNNing MayHem eVeNT Jul 4
- Lookin' For A Cure - Palo Alto Jul 11
- Valley Crest Trails Jul 12
- Bad Bass Half Marathon 10K & 5K Jul 18
- Bad Bass Half Marathon, 10k & 5k Jul 18
- Brian Waterbury Memorial Rock to Pier Fun Run Jul 18
- Harding Hustle Jul 18
- Harding Hustle Jul 18
- Jolly10K Jul 18
- Low Tide Ride and Stride Jul 18
- Tough Mugu Jul 18
- BATIQUITOS TRAIL Jul 19
- South Bay 24 hours & South Bay Mini Jul 24
- Dirty Dozen Endurance Runs Jul 25
- Dirty Dozen Endurance Runs Jul 25
- Elder Creek Night Runs Jul 25
- Elder Creek Night Runs Jul 25
- Lost Sierra Endurance Race Jul 25
- Miles That Matter 5K Jul 25
- Blood, Sweat and Beers Trail Run Jul 26
- Pear Fair Run Jul 26
- Badwater 135 Jul 27
- Ultra-Marathon de Badwater Jul 27
August 2026
- Point Mariah Trail Marathon Aug 1
- Riley Park Trail Races Aug 1
- Summer Breeze Aug 1
- Summer Breeze Half Marathon 10K & 5K Aug 1
- Truckee Half Marathon and 5K Aug 1
- Ely Mountain Trail Race Aug 2
- Run LA 10 Miler Aug 2
- Skyline 50k Aug 2
- Skyline 50k Endurance Run Aug 2
- Bear Creek Half Marathon 10K & 5K Aug 8
- Bear Creek Half Marathon 10K & 5K Aug 8
- Bear Creek Half Marathon, 10k/5k Aug 8
- Mt. Madonna Challenge Aug 8
- Windfall Full Moon Trail Runs 5,10,15,30K Aug 8
- SAR Wild Run Aug 9
- Redwood (Summer) Trail Run Aug 15
- Desolate Peaks Aug 22
- Double Dipsea Aug 22
- Santa Cruz Trail Run Aug 22
- Santa Cruz Trail Run Aug 22
- Trail Run at Sly Park - Summer Aug 22
- Walt Stack DSE Double Dipsea Aug 22
- Angel Island Half Marathon & 10K Aug 29
- Tanri Lake Race Aug 29
September 2026
- Burning Man Ultra Sep 1
- Noble Canyon 50K/15K Sep 5
- Mammoth Bar Trail Runs Sep 6
- Mt. Baldy Run-to-the-Top Sep 7
- Mendocino Running Festival Sep 11
- Emerald Bay Trail Run Sep 12
- Los Angeles Sunset Relays | 5K & Kid Sep 12
- Mendocino Running Festival Sep 12
- Pincushion Hill Climb Sep 12
- Spokes and Shadows 12 Hr. Night Mountain Bike Race Sep 12
- UTMB Mammoth Lakes 100m 2026 Sep 18
- Carson Canyons Trail Runs Sep 19
- Devil After Dark Sep 19
- Half Moon Bay Beach Safety Run Sep 19
- Rocky Ridge Half Marathon 10K & 5K Brazen Championships Sep 19
- Rocky Ridge Half Marathon/10K/5K Sep 19
- The Aloha Run Sep 19
- The Gold Rush Growler 10 Mile & 5K Trail Runs Sep 19
- Tierra Redonda Mountain Trail Run Sep 19
- Tierra Redonda Mountain Trail Run Sep 19
- GO2 for Lung Cancer San Francisco Bay Area 5k Sep 20
- ICC Sevathon Sep 20
- San Francisco Aloha Run Sep 20
- The Teal Run Sep 20
- Mammoth Trail Fest Sep 24
- Mammoth Trailfest Sep 25
- 2026 Big Sur Trail Marathon, Half Marathon & 5 Mile Sep 26
- Ascot Hills Challenge 5K Sep 26
- Bandit Ultra Trail Sep 26
- Be the Light Night Walk/Run 5K/10K Sep 26
- Double Peak Challenge Sep 26
- Double Peak Challenge 10k Sep 26
- Great Trail Race Sep 26
- HERS Breast Cancer Foundation Walk/Run Sep 26
- Mount Disappointment Mountain Race Sep 26
- Ridge Rambler Half Marathon Sep 26
- The Auburn Half Marathon Sep 27
- The Auburn Half Marathon, 12k/5k Sep 27
- ZERO Prostate Cancer Run/Walk - Sacramento Sep 27
October 2026
- Yuba Gold Oct 1
- Back on the Ranch Trail Run Oct 2
- THE MAMMOTH Oct 2
- Cirque Series - Mt Baldy, CA Oct 3
- Cuyamaca 100k Oct 3
- San Diego Donut Dash Oct 3
- SF Bay Area HDSA Team Hope 5K Walk & Fun Run Oct 3
- Ursula Rains Balboa Boogie 5K Cross Country Race Oct 3
- Palos Verdes Trails 5K Oct 4
- Carmel Valley Trail 15K 10K and 5K Oct 10
- Carmel Valley Trail 5K/10K/15K Oct 10
- Carmel Valley Trail Race Oct 10
- Euchre Bar Massacre Oct 10
- Granite Head Trails & Ales Trail Race Oct 10
- Mountain Tiger Diablo Oct 10
- Reservoir Dogs Trail Run Oct 10
- Sunset & Cider Trail Races Oct 10
- That's No Moon Trail Races Oct 10
- Tortoise Trot Trail Run Oct 10
- Champion Mine Trail Race Oct 11
- Cahuilla Rez Ultra Oct 17
- California Gold Rush Trail Run - Fall Oct 17
- California Gold Rush Trail Run - Fall Edition Oct 17
- Campbell Oktoberfest Fun Run Oct 17
- Diablo Summit Stomp Oct 17
- Jacks Valley Trail Rally 5K – 10K – Half Oct 17
- John Wayne Grit Series Lone Pine, CA Oct 17
- Lake Hodges Trail Fest Oct 17
- Sonoma Fall Classic Oct 17
- SPACEROCK Trail Race Oct 17
- The Jackalope Lope Oct 17
- Vampire Run - Unite for Bleeding Disorders Oct 18
- Weekend at Burney Oct 22
- NorCal Backyard Ultra Oct 23
- San Diego 200 Oct 23
- Acorn Creek Trail Run Oct 24
- Haunted Corner 5K, 10K Pleasant Hill Oct 24
- Island View - Endurance Run Oct 24
- Island View Endurance Run Oct 24
- Napa Fall Wine Country Marathon, Half Marathon & 10K Oct 24
- Napa Wine Country Marathon, Half Marathon & 10K Oct 24
- Oakland Hills Trail Run Oct 24
- Range of Light Trail Races Oct 24
- The Rubicon Oct 24
- Trail Run at Sly Park - Fall Oct 24
- Wildwood Canyon Trail Run Oct 24
- Wildwood Canyon Trail Run Oct 24
- Howl-o-ween Doggie Dash 5K Oct 25
- Machete Muertos 200 Oct 28
- HALLOWEEN SPOOKTACULAR 6 HOUR AND 4 HOUR TRAIL RUN Oct 31
- Haunted Sacramento 5K, 10K Oct 31
- ZombieRunner Halloween Oct 31
November 2026
- Ferris 50 Nov 7
- Joshua Tree Half Marathon Nov 7
- Joshua Tree Half Marathon 2026 Nov 7
- Mermaid Trail Run Nov 7
- Mermaid Trail Run - 2026 Nov 7
- Rio Del Lago 100 Mile Nov 7
- The Saddleback Marathon Nov 7
- The Saddleback Marathon Nov 7
- Tulare Santa Fe Trail-A-Thon 5k Nov 7
- Sri Chinmoy 6-Hour Race - San Diego Nov 8
- Catalina Island Half Marathon Nov 14
- Catalina Island Half-Marathon & 10K Nov 14
- Desert Island Trail Runs Nov 14
- Kaweah Lake Bottom Trail Run Nov 14
- Live Oak Odyssey Nov 14
- Red Rock Canyon Ultra Nov 14
- Roosters Backyard Ultra Nov 14
- Fire Fest Ultra Nov 21
- Anaheim Turkey Trot 5K/10K -Corner of Katella on the SANTA ANA RIVER TRAIL. Across the street from Honda Center Nov 22
- LA Classic Turkey Trot Nov 22
- Big Bear Turkey Trot Nov 26
- LA Turkey Trail Nov 26
- LA Turkey Trail Nov 26
- Nitro Turkey Thanksgiving Run Nov 26
- Zoom Turkey Trot Nov 26
- Black Mountain Turkey Burner Nov 28
- Black Mountain Turkey Burner Trail Race Nov 28
- Quarry Turkey Half Marathon/10K/5K Nov 28
December 2026
- Calero Trail Run - Winter Dec 5
- Calero Trail Run (winter) Dec 5
- Dixon Lake 10K/10Mi Trail Race Dec 5
- ZombieRunner Quarry Lakes Dec 5
- North Face Endurance Challenge 50m 2026 Dec 6
- Santa Runs Griffith Park Dec 6
- The Krampus Cross Country 5K, 10K, or Naughty Nine Miler Dec 6
- Last One Standing 10K+ Ultra Marathon Dec 11
- Crystal Cove Trail Run Dec 12
- Crystal Cove Trail Run Dec 12
- Dixon Lake 10 Miler and 10K Dec 12
- Dixon Lake 10/10 Trail Race Dec 12
- Hark the Herald Angels Run Dec 12
- Summit Rock Half Marathon, 10K, 5K Dec 12
- Santa Hustle - Roseville Dec 13
- Rattlesnake Mountain Challenge Dec 26
- Brazen New Year’s Eve Half Marathon/10K/5K Dec 31
January 2027
- Brazen New Year’s Day Run Jan 1
- Griffith Park Resolution Run Jan 3
- Avalon 50K/50M Benefit Run Jan 9
- San Diego 50 and Trail Marathon Jan 9
- San Diego 50 and Trail Marathon, Half Marathon, 10M & 5M Jan 9
- The IPA Trail Runs Jan 9
- Semi-Marathon de Lake Mead Jan 11
- Little Big Dog Trail Run Jan 23
- The Gumby 5K & 10K Trail Runs Jan 23
- Del Dios Trail Half Marathon 10K, and 5K Jan 24
- Del Dios Trail Race Jan 24
- Del Dios Trail Race Jan 24
- Coyote Hills Half Marathon/10K/5K Jan 30
- The Bootleg Boogie Jan 30
February 2027
- Escape from Folsom Trail Runs Feb 6
- Golden Gate Winter 50k, Marathon, 30k, Half Marathon & 8k Feb 6
- Marathon de la Vallée de la Mort Feb 6
- Bay Breeze Half Marathon/10K/5K Feb 13
- FOURmidable Feb 17
- Jackpot Ultra Running Festival Feb 19
- Jackpot Ultras Feb 19
- FOURmidable Feb 20
- San Pasqual Valley Trail Race Feb 20
- San Pasqual Valley Trail Race Feb 20
- The Lost Trail 5K & Half Marathon Feb 20
- Sanborn Trail Challenge Feb 27
- Zion Half Marathon 2027 Feb 27
- Zoom Angel Island Feb 28
March 2027
- Chanoko 31K, 10K & 5K Trail Runs Mar 6
- Mt Umunhum Trail Conquest Mar 6
- Beer City Half San Diego Mar 13
- Catalina Island Marathon, 10K, 5K Mar 13
- Nine Trails 35 Mile Endurance Run Mar 13
- Zoom San Francisco Mar 13
- The Mighty Dog 10K & 5K Trail Runs Mar 20
- VALENCIA Trail Race Mar 20
- Cappy’s Backyard Ultra Mar 27
- Coast to Crest 10K and 5K Mar 27
- Coast to Crest 10K and 5K Mar 27
April 2027
- Bedrock Valley Trail Runs Apr 3
- Bedrock Valley Trail Runs Apr 3
- Santa Teresa King Richard Annual Trail Run Apr 3
- Bedrock Valley Trail Runs Marathon, Half Marathon, 15k & 5k Apr 4
- Zion 60K & 30K Apr 10
- Zion Trail Half Marathon Apr 10
- Zion Ultra Marathons Apr 10
- Zion Ultras Apr 10
- 2027 Silver Moon Race Apr 17
- Horseshoe Lake Trail Run Apr 17
- Marathon Mountains 2 Beach Apr 17
May 2027
June 2027
- Broken Arrow SkyRace Jun 18
- TrailCon – two day conference Jun 21
August 2027
- GOOD COMPANY 14K Aug 29