Bay to Ridge to Skyline to Sea (CA)

San Mateo County, California, United States

50.4 miles (81.1 km) · 6,244 ft elevation gain · Point to Point · trail · Route

Bay to Ridge to Skyline to Sea (CA) is a 50.4 mile point-to-point route located in San Mateo County, California, United States. The route climbs 6,244 feet and descends 6,227 feet. The largest climb extends 2.4 miles, gaining 1,062 feet. The course averages 127 feet of vertical gain per mile. 78% of the route can be run, with walking required on steeper grades. Surface conditions are primarily trail. Terrain difficulty is rated as very hilly. Difficulty is rated 8.8 out of 10, placing it in the 59.09th percentile. This route serves both trail runners training for ultras and hikers exploring California.