32 min
Start at the southern end of the Coastal South Trail and head east. The trail starts out dropping on a fairly straight trail. Soon, the very tight switchbacks will start and continue, and continue until you are dropped out in a flat field. Head to your right, looking for a bridge. Cross the bridge and head up the dirt road to Muir Woods Road.
The start of the 2015 Tamalpa Headlands 50k which was also the USATF 50k Trail Championships.
Men's Champion Andy Wacker crosses the finish line.