Events
Race Directors

50 Miles Ultra Running Events in California

All 50 KM 50 Miles 100 KM 100 Miles 6 Hours 12 Hours 24 Hours

Upcoming Events

Date Event City Distances
09/26/26 Dick Collins Firetrails Castro Valley 50 Miles , 100 KM
10/10/26 Ruth Anderson San Francisco 50 KM , 50 Miles
10/10/26 Euchre Bar Massacre Foresthill 50 Miles
10/10/26 That's No Moon Ultras & 30K Silverado 50 KM , 50 Miles
10/17/26 Sonoma Fall Classic Healdsburg 50 Miles , 100 Miles
10/28/26 Machete Trail Madness 100 Miler Perris 50 Miles , 100 Miles , 200 Miles
12/05/26 Ray Miller 50/50 Malibu 50 KM , 50 Miles
12/05/26 Anza Borrego Cuyamaca 50 Mile Run Julian 50 Miles
12/06/26 Hunter S. Thompson Fear & Loathing San Francisco 50 KM , 50 Miles
01/09/27 San Diego 50 and Trail Runs Escondido 50 Miles
01/09/27 Avalon Benefit 50 Avalon 50 KM , 50 Miles
01/23/27 Golden Gate Spartan Trail Classic San Francisco 50 KM , 50 Miles
01/30/27 Sean O'Brien 100k/50M/50k Malibu 50 KM , 50 Miles , 100 KM
02/06/27 Jed Smith Sacramento 50 KM , 50 Miles
02/20/27 Happy Chinese New Year San Diego 50 Miles
04/17/27 Leona Divide Lake Hughes 50 KM , 50 Miles , 100 KM , 100 Miles
05/15/27 Rim Rock 50 Mile Trail Challenge Napa 50 Miles

Past Events

Date Event City Distances
06/13/26 Cool Moon Trail Runs Cool 6 Hours , 12 Hours , 50 Miles , 100 KM , 100 Miles
06/06/26 PCT 50 Cleveland National Forest 50 KM , 50 Miles
06/06/26 Malibu Canyon Trail Races (SAMO 100 Mile) Malibu 50 KM , 50 Miles , 100 KM , 100 Miles
05/16/26 Bishop High Sierra Bishop 50 KM , 55 KM , 50 Miles , 100 KM
05/09/26 Quicksilver San Jose 50 KM , 50 Miles , 100 KM
05/02/26 Wild Wild West Marathon And Ultra Lone Pine 50 KM , 50 Miles
04/17/26 Run4Kids 24 Hour Running Party Corona 6 Hours , 12 Hours , 24 Hours , 50 Miles , 100 Miles
04/11/26 Lake Sonoma 100K & 50K Healdsburg 50 KM , 50 Miles , 100 KM
04/04/26 American River Folsom 50 Miles
03/14/26 Marin Ultra Challenge Sausalito 50 KM , 50 Miles
02/07/26 Monterey Ultra Monterey 50 Miles
08/29/25 Run-de-Vous San Martin 14 Hours , 50 KM , 50 Miles , 100 KM , 100 Miles , 126 Miles
06/07/25 Mt Umunhum Ultras San Jose 50 KM , 50 Miles , 52 Miles , 100 KM
05/31/25 Calero Trail Run - Spring San Jose 50 KM , 50 Miles
04/05/25 Beyond Limits Ultra Mountain Center 24 Hours , 48 Hours , 72 Hours , 50 KM , 50 Miles , 100 Miles , 200 Miles
10/19/24 SAMO Trail Runs Pacific Palisades 50 KM , 50 Miles
08/10/24 Headlands Sausalito 50 Miles , 100 KM , 75 Miles , 100 Miles , 150 Miles
08/03/24 Kirkwood's Ultras Kirkwood 50 KM , 46 Miles , 50 Miles , 100 KM , 100 Miles
03/22/24 RUN4Kids 48r Hour Running Party Corona 6 Hours , 12 Hours , 24 Hours , 25 Hours , 48 Hours , 50 Miles , 100 Miles
11/04/23 Woodside Trail Run Woodside 45 KM , 50 KM , 50 Miles
09/30/23 Saddle2Surf 100/50 Norco 50 Miles , 100 Miles
05/20/23 San Francisco 50/50 Rodeo Beach 50 KM , 50 Miles , 100 Miles
11/19/22 Best Runner (Best of San Diego ) San Diego 50 KM , 50 Miles , 100 KM , 120 KM , 140 KM , 100 Miles
10/08/22 Ultra Trails Lake Tahoe Lake Tahoe 50 KM , 50 Miles , 100 KM , 100 Miles
09/10/22 Overlook Endurance Runs Foresthill 50 KM , 50 Miles , 100 KM
04/30/22 Ridge Route Ultra Castaic 50 KM , 50 Miles
04/16/22 Mokelumne River 50 Valley Springs 50 KM , 50 Miles
11/13/21 Two Peaks Redding 50 KM , 50 Miles
10/09/21 Elder Creek Trail Runs 50mile/100k Anza 24 Hours , 50 KM , 50 Miles , 100 KM
10/02/21 Echo Summit Trail Run Challenge Twin Bridges 5 KM , 10 KM , 10 Miles , 13.1 Miles , 20 Miles , 26.2 Miles , 50 KM , 40 Miles , 50 Miles
07/03/21 Lovers Leap of Faith Kyburz 50 KM , 50 Miles , 100 KM
06/26/21 Mt Shasta Trail Runs Mt Shasta 50 KM , 50 Miles
06/19/21 The Sierra Azul Ultras Almaden 50 KM , 50 Miles , 100 KM
04/11/21 Le Tour De Orange County Mission Viejo 50 KM , 50 Miles
01/24/21 Hoka One One Project Carbon X Sacramento 50 KM , 50 Miles , 100 KM
11/21/20 Santa Barbara Red Rock Santa Barbara 40 Miles , 50 Miles
10/24/20 SLO Ultra San Luis Obispo 50 KM , 50 Miles
10/17/20 Twin Peaks 50 Corona 50 KM , 50 Miles
03/28/20 Old Goat Lake Elsinore 50 KM , 50 KM , 50 Miles , 50 Miles
03/14/20 Pioneer Spirit 50 Folsom 50 Miles
01/18/20 Celtic Winter Classic 24 Hour Run Bakersfield 12 Hours , 24 Hours , 50 KM , 50 Miles , 100 Miles
11/16/19 The North Face Endurance Challenge California Marin 50 KM , 50 Miles
10/19/19 Sac River Trail Races Redding 55 KM , 50 Miles
10/12/19 Santa Barbara 100 Santa Barbara 50 KM , 50 Miles , 100 KM , 100 Miles
04/28/18 Lost Boys Borrego Springs 55 KM , 50 Miles
03/24/18 Man vs. Horse - Indian Wells Ultra Inyokern 50 KM , 50 Miles
04/22/17 Razorback Endurance Race San Martin 6 Hours , 12 Hours , 24 Hours , 48 Hours , 72 Hours , 50 KM , 50 Miles , 100 KM , 100 Miles , 125 Miles
10/08/16 Dick Collins Firetrails (Inactive) Castro Valley 50 Miles
06/11/16 Rim to Rim Trail Run Chico 50 KM , 50 Miles
01/09/16 Long Beach Enlightened Ultra Long Beach 50 KM , 50 Miles , 100 KM , 100 Miles
10/17/15 100 Mile Endurance Challenge Corona 50 Miles , 100 Miles , 103.25 Miles
10/10/15 Joshua Tree Ultra Joshua Tree 50 KM , 50 Miles , 100 KM , 100 Miles
08/16/15 Run on the Sly Pollock Pines 50 KM , 50 Miles
05/02/15 Nirvana Ultra Big Bear Big Bear 50 KM , 50 Miles , 100 KM , 100 Miles
12/26/14 The Volunteer Run : FBO the Ultra Medical Team Bonita 50 KM , 50 Miles , 100 Miles
11/01/14 San Juan Trail San Juan Capistrano 50 KM , 50 Miles
11/23/13 Run d'Amore San Martin Unknown Miles , 50 KM , 50 Miles , 100 KM , 100 Miles
11/23/13 The Spirit of Rock 50M and Half Marathon Auburn 50 Miles
02/24/13 San Bruno Ultramarathons Daly City 50 KM , 50 Miles
02/18/12 Rocky Road Coto de Caza 50 Miles , 100 Miles
11/12/11 Last Chance 50 Granite Bay 50 KM , 50 Miles
09/24/11 Sierra Nevada Endurance Run Granite Bay 50 Miles , 52.4 Miles , 100 KM
07/16/11 Headlands Fifty Sausalito 50 Miles
06/04/11 Rancho Canada del Oro and Calero Park San Jose 34 Miles , 50 Miles
02/26/11 Pony Express Cameron Park 50 KM , 50 Miles , 100 KM
11/06/10 Helen Klein Sacramento 50 KM , 50 Miles
10/09/10 Coto de Caza Coto de Caza 50 Miles
06/05/10 Blue Canyon Santa Barbara 50 KM , 50 Miles , 100 KM
04/19/09 Diablo Endurance Run Clayton 50 KM , 37 Miles , 38 Miles , 50 Miles
08/23/08 Wildest Run in the West Soda Springs 50 KM , 50 Miles , 100 KM
03/02/02 Smuggler's Lake Moreno 50 Miles
09/13/97 Cameron Park Cameron Park 50 Miles
04/26/97 California 50 Santa Rosa 50 Miles
06/01/96 Skyline to Sea Trail 50 Mile Sillicon Valley 50 Miles
11/12/95 Gibson Ranch Elverta 24 Hours , 48 Hours , 72 Hours , 144 Hours , 50 Miles
09/16/95 Pacific Crest Trail Fifty Boulder Oaks 50 KM , 50 Miles
03/18/95 Redwood Empire 12 Hour Run Santa Rosa 12 Hours , 50 KM , 50 Miles
01/30/93 Ledson Marsh Sacramento 50 KM , 50 Miles
09/08/91 Double Danny Danville 50 Miles
08/10/91 Eldorado Gold Placerville 50 KM , 50 Miles
10/10/87 West Coast University 50 Miler Fountain valley 50 Miles
12/14/86 Palm Springs Fifty Palm Springs 50 Miles
10/20/85 Far Western 50 bella Vista 50 Miles
12/15/84 Lake Murray 50 Mile La Mesa 50 Miles
11/18/84 Challenge Cup 50 San Francisco 50 Miles
06/02/84 Nugget 50 Mile Trail Run North San Juan 50 Miles
12/21/80 Striders Santa Monica Track 50 mi Santa Monica 50 Miles
02/25/79 PA-AAU 50 Miler Marysville 50 Miles
10/15/72 National AAU 50 Mile Championship Rocklin 50 Miles

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Toxic Trail 37
Port Mayaca, FL - 25 finishers
37 Miles
John Cappis 50K Fat Ass
Silverton, CO - 25 finishers
50 KM | 19 Hours
Vulture Vista Ultra
Greencastle, IN - 62 finishers
12 Hours | 6 Hours
Six Days In the Dome-WI
Milwaukee, WI - 2 finishers
72 Hours | 48 Hours
Centurion Ultra Trail Event
Stratford, CT - 39 finishers
33 Hours
Buckeye Trail 50K - Summer
Brecksville, OH - 193 finishers
50 KM
McCall Trailrunning Classic
McCall, ID - 19 finishers
50 KM
Trippen through the Timber
payson, UT - 20 finishers
50 KM
Hollis Heat: Time Trials
Ellenboro, NC - 13 finishers
50 KM
Chase the Moon Endurance Run
Highlands Ranch, CO - 107 finishers
50 KM | 12 Hours | 6 Hours
View All Results