Foss Lakes - Iron Cap Loop (WA)

King County, Washington, United States

26.4 miles (42.5 km) · 8,641 ft elevation gain · Loop · trail · Route

Foss Lakes - Iron Cap Loop (WA) is a 26.4-mile loop route in King County, Washington, United States, gaining 9,210 feet of elevation. The route follows a up-and-over elevation profile. The terrain breaks into 8 distinct sections including 4 significant climbs. The longest climb covers 9.8 miles gaining 4,764 feet at an average 10.1% grade. Only 39% of the terrain is runnable — expect substantial hiking throughout. The route opens with a climb and finishes with mixed terrain.