Perimeter Trail

CO, USA

21.3 miles (34.2 km) · 275 ft elevation gain · Loop · trail · Route

Perimeter Trail covers 21.3 miles across CO, USA. Runners face 275 feet of climbing with 251 feet of loss. The course is 100% runnable, with the remainder requiring hiking on steep or technical sections. Trail comprises the majority of the course. The course features mostly flat terrain. The course difficulty of 3.6 puts it in the top 69.5% of challenging routes at this distance. Popular among trail runners and hikers seeking CO adventures.

Route facts

Distance	21.3 mi (34.2 km)
Elevation gain	275 ft (84 m)
Average gain	13 ft per mile (2 m per km)
Longest climb	10.0 mi, 209 ft of gain
Steepest climb grade	3.1%
Runnable	100% of the route
Climbs / descents	1 climbs, 0 descents
Profile shape	Flat
Difficulty score	4 of 100
Surface	trail
Route shape	Loop
Type	Route

Questions about Perimeter Trail

How much elevation gain does Perimeter Trail have?

Perimeter Trail has 275 ft (84 m) of elevation gain over 21.3 miles (34.2 km). That averages 13 ft of gain per mile.

How difficult is Perimeter Trail?

The difficulty score for Perimeter Trail is 4 of 100. That is harder than 36.3% of routes at a similar distance. About 100% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Perimeter Trail?

The longest climb on Perimeter Trail runs 10.0 miles (16.0 km) and gains 209 ft (64 m). The steepest climb grade on the route is 3.1%.