Mount Terror (WA)

Whatcom County, Washington, United States

22.3 miles (35.9 km) · 10,352 ft elevation gain · Loop · trail · Route

Mount Terror (WA) is a 22.3-mile loop route in Whatcom County, Washington, United States, gaining 10,406 feet of elevation. The route follows a up-and-over elevation profile. The terrain breaks into 6 distinct sections including 3 significant climbs. The longest climb covers 7.2 miles gaining 5,922 feet at an average 14.6% grade. Only 31% of the terrain is runnable — expect substantial hiking throughout. The route opens with a climb and finishes with flat terrain.

Route facts

Distance	22.3 mi (35.9 km)
Elevation gain	10,352 ft (3,155 m)
Average gain	464 ft per mile (88 m per km)
Longest climb	9.9 mi, 5,909 ft of gain
Steepest climb grade	69.1%
Runnable	31% of the route
Climbs / descents	3 climbs, 2 descents
Profile shape	Up, then down
Difficulty score	17.8 of 100
Surface	trail
Route shape	Loop
Type	Route

Grade breakdown

Grade band	Share of route
Flat	5%
Mild uphill	11%
Moderate uphill	7%
Steep uphill	32%
Mild downhill	10%
Moderate downhill	6%
Steep downhill	31%

Questions about Mount Terror (WA)

How much elevation gain does Mount Terror (WA) have?

Mount Terror (WA) has 10,352 ft (3,155 m) of elevation gain over 22.3 miles (35.9 km). That averages 464 ft of gain per mile.

How difficult is Mount Terror (WA)?

The difficulty score for Mount Terror (WA) is 17.8 of 100. That is harder than 88.1% of routes at a similar distance. About 31% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Mount Terror (WA)?

The longest climb on Mount Terror (WA) runs 9.9 miles (15.9 km) and gains 5,909 ft (1,801 m). The steepest climb grade on the route is 69.1%.