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

Route facts

Distance	26.4 mi (42.5 km)
Elevation gain	8,641 ft (2,634 m)
Average gain	327 ft per mile (62 m per km)
Longest climb	5.7 mi, 2,589 ft of gain
Steepest climb grade	174.1%
Runnable	40% of the route
Climbs / descents	5 climbs, 2 descents
Profile shape	Up, then down
Difficulty score	14.6 of 100
Surface	trail
Route shape	Loop
Type	Route

Grade breakdown

Grade band	Share of route
Flat	6%
Mild uphill	12%
Moderate uphill	7%
Steep uphill	26%
Mild downhill	14%
Moderate downhill	8%
Steep downhill	27%

Questions about Foss Lakes - Iron Cap Loop (WA)

How much elevation gain does Foss Lakes - Iron Cap Loop (WA) have?

Foss Lakes - Iron Cap Loop (WA) has 8,641 ft (2,634 m) of elevation gain over 26.4 miles (42.5 km). That averages 327 ft of gain per mile.

How difficult is Foss Lakes - Iron Cap Loop (WA)?

The difficulty score for Foss Lakes - Iron Cap Loop (WA) is 14.6 of 100. That is harder than 82.5% of routes at a similar distance. About 40% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Foss Lakes - Iron Cap Loop (WA)?

The longest climb on Foss Lakes - Iron Cap Loop (WA) runs 5.7 miles (9.2 km) and gains 2,589 ft (789 m). The steepest climb grade on the route is 174.1%.