Foss Lakes - Iron Cap Loop (WA)

King County, Washington, United States

26.4 miles (42.5 km) · 9,210 ft elevation gain · Loop · trail · Route

Foss Lakes - Iron Cap Loop (WA) covers 26.4 miles across King County, Washington, United States. Runners face 9,210 feet of climbing with 9,356 feet of loss. The largest climb extends 7.1 miles, gaining 1,299 feet. The course averages 351 feet of vertical gain per mile. The course is 39% runnable, with the remainder requiring hiking on steep or technical sections. Trail comprises the majority of the course. Terrain difficulty is rated as mountainous. Difficulty is rated 19.6 out of 10, placing it in the 85.98th percentile. Popular among trail runners and hikers seeking Washington adventures.