Twin Sisters (WA)

Whatcom County, Washington, United States

13.1 miles (21.1 km) · 4,694 ft elevation gain · Loop · trail · Route

The Twin Sisters (WA) route traverses 13.1 miles through Whatcom County, Washington, United States. Elevation gain totals 4,694 feet, with 4,695 feet of descent. The largest climb extends 4.9 miles, gaining 3,668 feet. The course averages 358 feet of vertical gain per mile. About 21% of the distance is runnable terrain. Terrain is predominantly trail. Terrain difficulty is rated as mountainous. Difficulty is rated 22.6 out of 10, placing it in the 89.2th percentile. The route draws trail runners and hikers interested in technical terrain in Washington.