Marin County 100 Miler

Marin County, California, United States

108.1 miles (173.9 km) · 22,566 ft elevation gain · Loop · trail · Route

The Marin County 100 Miler route traverses 108.1 miles through Marin County, California, United States. Elevation gain totals 22,566 feet, with 22,583 feet of descent. The longest climb spans 27.4 miles with 1,544 feet of gain. Elevation gain averages 211 feet per mile. About 55% of the distance is runnable terrain. Terrain is predominantly trail. The course features mountainous terrain. The course difficulty of 14.2 puts it in the top 23.22% of challenging routes at this distance. The route draws trail runners and hikers interested in technical terrain in California.