Avg Temps f.


Gain/Loss in ft


Furthest Aid

6 miles

Highest Elev.






Time Limit

10 hours



Longest Climb

1000ft/2 miles

Summary: A new course in 2017, starting in Sausalito near the Marin Headlands and ending in Crissy Field in San Francisco, runners will run some of the same course as before, including Tennessee Valley and Muir Beach. After several ascents and descents, much of which offers beautiful views of San Francisco and Marin, including the Golden Gate Bridge, runners leave the Marin Headlands and run over the Golden Gate Bridge itself before the final push to finish at Crissy Field.

Lessons Learned from Race Reports

  • New For 2017! Start and Finish are in a different location. Make sure you know the shuttle information
  • Total distance is 32.4, so you have your longest stretch between aid stations after the last aid station at 26.4
  • Since there are several races of varying distances and courses going on over the weekend, be sure you know the ribbon course marking color that corresponds to your race
  • If it’s rainy, sections of the trail are very exposed and can make for some wet, windswept miles
  • With the 50 miler starting earlier, if the trail is wet or muddy, it can be quite sloppy by the time 50k runners are going through
  • Again, if it’s muddy, the descents can feel all the more steep because they are slicker and have less traction
  • Be prepared for any kind of weather, especially if you’re flying to the race, as it’s been drastically each past year of racing, and a lot of the course is exposed
  • With so many climbs and descents, one after the other, pacing is a must, as the climbs will seem harder and harder, and be sure not to burn out on the initial descents and flats


Total gain/loss: 6736/~6736

Total climbs: 6 major climbs of 500-1000ft over the course of 1-2 miles each (very few flat sections)

Longest climb: 1000ft/2 miles

Steepest climb: 1000ft/.75 miles

Map & Elevation profile in Course Guide

Aid stations

Total aid stations: 7

Furthest distance apart: 6 miles (twice)

Locations: 3.5, 6.5, 11.8, 17.7, 20.5, 23.5, 26.4 (Bold indicates crew accessible)

Miles 3.5 and 23.5 are the same aid station, as well as 6.5 and 20.5

What’s available: Chips, Pretzels, Saltines, Oranges & Bananas, Skittles, M&Ms, Peanut Butter & Jelly Sandwiches, Potatoes & Salt, Vegetable Broth, Energy Gels, Electrolyte Hydration, Pepsi & Mountain Dew, Water

Crew access

Access Locations: Miles 3.5, 11.8, and 23.5, along with start and finish.

Crew instructions/directions: 3.5 and 23.5 are the same aid station; no parking at 11.8

See Course Guide, page 10 for more information, directions, rules, and parking information



Race qualifiers

3 UTMB points

Race reports (entertaining at the least, helpful re: Marin miles, pics of course, experience with the rain!) (great course photos – on a pretty day!)

Strava activities and GPX files

Race Website

Course Guide