Race Information

The Basics

Saturday, August 25, 2018

7:30 AM Start (Cutoffs)

Santos Meadows
Muir Beach, CA

Maximum number of runners: 200

Presented by the Tamalpa Runners

Race Directors
Diana and Tim Fitzpatrick

Race Morning Information

All runners must check-in between 6:30 AM and 7:15 AM race morning at the Santos Meadows start area. Bib numbers will be available at check-in.
There will be parking at the start/finish area; carpooling is strongly recommended. No parking will be allowed along Muir Woods Road. Volunteers will be at the start to assist with parking.

Directions to Start and Finish

Click Here for printable directions with map (PDF)

Google Map of Route

Directions to Santos Meadows in Muir Beach

From San Francisco: Take Golden Gate Bridge and Highway 101 North.
From East Bay: Take Richmond Bridge and Highway 101 South.
From North: Take Highway 101 South.

To Santos Meadows
Distances are measured from the first traffic light after exiting 101 from North or South (Fireside Motel on left).

  • Exit off Highway 101 at Stinson Beach/Hwy 1 exit.
  • At first traffic light, proceed on Highway 1 North (Shoreline Highway) toward Stinson Beach. (Start odometer at this light.)
  • At 0.5 miles (Arco Station on left), turn left at traffic light (Tamalpais Junction). Continue on Highway 1/Shoreline Highway toward Stinson Beach and Mt Tamalpais.
  • At 3.1 miles, stay left on Hwy 1 North towards Stinson Beach.
  • At 6 miles, go straight onto Muir Woods Road towards Muir Woods. (Hwy 1 goes left).
  • At 6.6 miles, turn left at Santos Meadow/Frank Valley Horse Camp into the Start/Finish and Parking Area.

Running the Race

Numbers must be worn on the front and be visible and they cannot be folded. Age group bibs must be worn on the back.

If you drop out of the race, let a race official or aid station captain know or we will be looking for you at the end of the day.

Aid stations will have water, soda, Clif bar drinks and products, and other food items such as bananas, cantaloupe, PB&J, pretzels, and M&M's. Clif gels will be available at Cardiac and Stinson (no gels at other aid stations due to permit restrictions).

Cup-free. This year's race will be cup-free. Runners will need to use their water bottles or hydration packs to drink from at aid stations or they can carry their own collapsible cup or other drinking device.

Runners do NOT have the right of way at road crossings or on the trail. Be careful at road crossings; pay attention to course monitors and park officials. Be courteous and respectful of hikers, bikers, and horses on the trail. Be quiet and cautious going past horse stable area in Tennessee Valley; we have strict permit use restrictions for that area.

The official course is on the trails and runners will be disqualified for cutting switchbacks.

The finishing time cutoff is 10 hours (5:30 PM). See the Course information for aid station cutoff times.


Crew is welcome at the following spots:

  • Rodeo Aid Station (parking available)
  • Tennessee Valley Aid Station (parking available)
  • Stinson Aid Station (parking available)

No crew is allowed at Highway One Crossing or Pantoll Parking Lot Area due to permit restrictions.

Course Record Incentive Prize Money

$500 for a new Woman's Course Record

$500 for a new Men's Course Record

All runners are eligible for course record prize money; USATF membership not required.

Finisher and Age Group Awards

All registered runners will receive our specially designed Headlands 50K T-shirt and a goody bag. Our T-shirts are created by renowned artist and friend Nick Wilton.

Age group awards (not money) will be given to the top men and women finishers in the following divisions:

19 years old and under
20 to 29 years old
30 to 39 years old
40 to 49 years old
50 to 59 years old
60 to 69 years old
70 to 79 years old
80 to 89 years old

Post Race Party

There will be Firetrail pizza at the finish for race participants and volunteers. Come enjoy this fresh handmade pizza baked on-site in a custom wood-fired oven.

Volunteer Information

To volunteer, please sign up on the Volunteer Sign Up page. If you have questions about volunteering, email the race director at rd@headlands50k.com