SatSep 12
Berkeley Trail Adventure
Tilden & Wildcat Canyon · Berkeley
10K 1,050′ · Half 2,800′ · 35K 4,600′ · 50K 6,800′10K · Half · 35K · 50K
Hard
Inside TrailVerified Aug 30Near capacity
Trail Race
Find a Trail Race · Bay Area collection
Bay Area trail races
23 verified races within 100 miles of San Francisco · Sep 2026–May 2027Upcoming calendar
23 races
September 2026
DateRace / locationDistanceDifficultySourceActions
SunSep 13
Honey Badger
China Camp State Park · San Rafael
Elevation by distance not published by organizer5K · 10K · Half
Moderate
Sasquatch RacingVerified Aug 30Registration open
October 2026
DateRace / locationDistanceDifficultySourceActions
SatOct 10
Reservoir Dogs
San Pablo Reservoir · Orinda
5K not published · 10K 500′ · Half 1,450′ · 35K 2,800′5K · 10K · Half · 35K
Moderate
Inside TrailVerified Aug 30Registration open
SatOct 24
Oakland Hills
Redwood Regional Park · Oakland
10K 1,250′ · Half 2,900′ · 35K 4,550′10K · Half · 35K
Hard
Inside TrailVerified Aug 30
SatOct 24
Napa Fall Wine Country
Bothe-Napa Valley State Park · Calistoga
Elevation by distance not published by organizer5K · 10K · Half · Marathon
Moderate
Enviro-SportsVerified Aug 30Registration open
November 2026
DateRace / locationDistanceDifficultySourceActions
SatNov 7
Mt. Tam Trail Run
Mt. Tamalpais State Park · Stinson Beach
10K 1,600′ · Half 2,800′ · 30K 3,900′ · 50K 6,000′10K · Half · 30K · 50K
Very hard
Inside TrailVerified Aug 30Near capacity
December 2026
DateRace / locationDistanceDifficultySourceActions
SatDec 5
Peacock Gap Trail Run
China Camp State Park · San Rafael
10K 1,140′ · Half 1,800′ · 30K 2,735′10K · Half · 30K
Hard
Inside TrailVerified Aug 30Registration open
SatDec 5
Calero Trail Run
Calero County Park · San Jose
5K 252′ · 10K 1,187′ · 15K 1,751′ · Half 2,477′ · 25K 2,726′ · Marathon/50K not published5K · 10K · 15K · Half · 25K · Marathon · 50K
Moderate
Troy's California Trail RunsVerified Aug 30Registration open
SatDec 12
Hark the Herald Angels
Angel Island State Park · Tiburon
Elevation by distance not published by organizer10K · Half
Moderate
Enviro-SportsVerified Aug 30Registration open
SatDec 19
Woodside Ramble
Huddart County Park · Woodside
10K 1,100′ · Half 2,600′ · 35K 3,600′ · 50K 5,400′10K · Half · 35K · 50K
Hard
Inside TrailVerified Aug 30
January 2027
DateRace / locationDistanceDifficultySourceActions
SatJan 23
Pacifica Foothills
San Pedro Valley Park · Pacifica
10K 1,200′ · Half 3,100′ · 30K 4,300′10K · Half · 30K
Very hard
Inside TrailVerified Aug 30
SatJan 30
Coyote Hills
Coyote Hills Regional Park · Fremont
5K 107′ · 10K 184′ · Half 678′5K · 10K · Half
Easy
Brazen RacingVerified Aug 30Registration open
February 2027
DateRace / locationDistanceDifficultySourceActions
SatFeb 6
Fort Ord Trail Run
Fort Ord National Monument · Monterey
10K 900′ · 25K 2,250′ · 50K 4,300′10K · 25K · 50K
Moderate
Inside TrailVerified Aug 30
SatFeb 20
Chabot / Redtail Ridge
Lake Chabot Regional Park · Castro Valley
5K 110′ · 10K 650′ · Half 1,800′ · 30K 2,800′ · 50K 4,500′5K · 10K · Half · 30K · 50K
Hard
Inside TrailVerified Aug 30
March 2027
DateRace / locationDistanceDifficultySourceActions
SatMar 13
Marin Ultra Challenge
Rodeo Beach · Sausalito
50K ~6,000′ · 50M 10,550′50K · 50M
Very hard
Inside TrailVerified Aug 30
SatMar 20
Napa Valley Trail Run
Bothe-Napa Valley State Park · Calistoga
Elevation by distance not published by organizer5K · 10K · Half · Marathon
Moderate
Enviro-SportsVerified Aug 30Registration opening soon
SatMar 27
Western Pacific
Quarry Lakes · Fremont
Elevation by distance not published by organizer5K · 10K · Half
Easy
Brazen RacingVerified Aug 30Registration open
April 2027
DateRace / locationDistanceDifficultySourceActions
SatApr 3
Golden Gate Headlands
Marin Headlands · Sausalito
Elevation by distance not published by organizer10K · Half · Marathon
Hard
Enviro-SportsVerified Aug 30Registration opening soon
SatApr 3
Diablo Trails Challenge
Castle Rock Recreation Area · Walnut Creek
Elevation by distance not published by organizer5K · 10K · Half · 50K
Very hard
Save Mount DiabloVerified Aug 30Registration open
SatApr 10
Romancing the Island
Angel Island State Park · Tiburon
Elevation by distance not published by organizer10K · Half
Moderate
Enviro-SportsVerified Aug 30Registration opening soon
SatApr 17
Call of the Wild
Jack London State Historic Park · Glen Ellen
Elevation by distance not published by organizer5M · Half
Moderate
Enviro-SportsVerified Aug 30Registration opening soon
SatApr 24
Mt. Tam Wild Boar
Mt. Tamalpais State Park · Mill Valley
Elevation by distance not published by organizer10K · Half
Very hard
Enviro-SportsVerified Aug 30Registration opening soon
May 2027
DateRace / locationDistanceDifficultySourceActions
SatMay 8
Stinson Beach / Muir Woods
Stinson Beach Park · Stinson Beach
Elevation by distance not published by organizer7M · Half · Marathon
Very hard
Enviro-SportsVerified Aug 30Registration opening soon
Bay Area trail race guide
What trail races are coming up near San Francisco?
There are 23 confirmed trail races from September 2026 through May 2027 across Marin, the East Bay, Peninsula, South Bay, Napa, North Bay, and Monterey. Filter the calendar by distance, area, difficulty, or open registration.
Which upcoming Bay Area trail races offer a 10K or shorter distance?
Choose “Up to 10K” to find shorter options including Honey Badger, Reservoir Dogs, Coyote Hills, Peacock Gap, and several Enviro-Sports races.
Which Bay Area trail races have the most elevation gain?
Choose “Very hard” for races with the largest climbs, including Mt. Tam Trail Run, Pacifica Foothills, Marin Ultra Challenge, Mt. Tam Wild Boar, and Stinson Beach / Muir Woods. Open each race guide for known elevation details.
Where can I find trail half marathons near San Francisco?
Choose “10K–Half” to compare trail half marathons throughout Marin, the East Bay, Peninsula, South Bay, Napa, and Monterey. Each listing links to the organizer’s official registration page.
How do I register for a trail race?
Use the orange Register link to go to the official organizer or registration page. The organizer handles payment, waivers, transfers, cancellations, and refunds.
How current is this trail race calendar?
Dates come from official race organizers and registration platforms. Every listing shows its source and verification date; availability can change, so confirm details before paying.
Can I invite someone to run with me?
Yes. Choose “Send to a friend” to share the race by text, email, or another app.
Find a Trail Race