
TAMALPA
HEADLANDS50K
Coastal climbs. Forest trails.
Tamalpa Headlands 50K.
August 17, 2027 · Proposed race day — to be confirmed
Entry informationA Northern
California
classic.
Trail running in Marin County.
Founded in 1995, Headlands brings runners to the trails of Marin and Mount Tamalpais. The day ends where it begins: back at Santos Meadow, with the finish-line party.
The story of the race


Lucas Canino / Unsplash · Not the Headlands course
The course.
Coastal. Miwok. Matt Davis. Dipsea.
A demanding loop through some of Marin’s best-known trails.
50K COURSE DISTANCE
APPROX. ELEVATION GAIN
PUBLISHED FINISH CUTOFF



Course figures and downloads reflect the published 2026 route. Next-edition details will be confirmed.
Race
information.
Travel, check-in, aid stations,
and race rules.
2026 information below is a planning reference, not a confirmed 2027 schedule.
Full race informationStart, finish & travel
Santos Meadow, 2704 Muir Woods Road, Mill Valley, California. Carpooling is strongly encouraged; follow the race team’s parking guidance.
Directions, parking & nearby accommodationBib pickup & check-in
Published 2026 schedule: Friday pickup at San Francisco Running Company, 3–6pm. Race-morning check-in at Santos Meadow, 6–6:45am; start at 7:30am.
Aid stations & what to carry
This is a cup-free race. Bring a reusable cup, bottles, or hydration pack. Aid stations provide drinks and food; hiking poles are permitted.
Plan your aid-station stopsDrop bags, crews & trail rules
For 2026, drop bags are allowed at Cardiac, but crew assistance is not. Crew access is permitted at Rodeo Beach and Tennessee Valley. Stay on the course and share the trails respectfully.
Read all crew restrictions and rulesVolunteer & get involved
Want to be part of the day from the other side of the aid-station table? See the official race page for volunteer opportunities.
Volunteer information
Race video.
Watch the 2025 race livestream.
“Get in for the 27th edition of this Northern California Classic, because this party’s gonna’ blow up!”
Victor Ballesteros
Race Director · From his 2026 welcome
We Are The Union — Ordinary Life
Our sponsors.
Thank you to our sponsors
and local partners.
2026 supporting partners shown. Next-edition roster to be confirmed.
Registration.
Next-edition registration details
are still to be confirmed.
Currently links to the published 2026 event.
