Boulder Creek Loop

Olympic National Park, Washington, United States

34.7 miles (55.9 km) · 11,029 ft elevation gain · Lollipop · Route

How long it takes

Moving time for a runner at each flat-ground pace, from the grade of every 100 m of the route. Stops are not included.

Flat-ground pace	Moving time
8:00/mi (4:58/km)	8 h 25 min
10:00/mi (6:13/km)	10 h 32 min
12:00/mi (7:27/km)	12 h 38 min
14:00/mi (8:42/km)	14 h 44 min

Route facts

Distance	34.7 mi (55.9 km)
Elevation gain	11,029 ft (3,362 m)
Average gain	318 ft per mile (60 m per km)
Longest climb	7.9 mi, 4,450 ft of gain
Steepest climb grade	40.3%
Runnable	39% of the route
Climbs / descents	3 climbs, 4 descents
Profile shape	Up, then down
Difficulty score	15 of 100
Route shape	Lollipop
Type	Route

Grade breakdown

Grade band	Share of route
Flat	4%
Mild uphill	12%
Moderate uphill	7%
Steep uphill	28%
Mild downhill	10%
Moderate downhill	12%
Steep downhill	26%

Questions about Boulder Creek Loop

How long does it take to run Boulder Creek Loop?

At a flat-ground pace of 10:00/mi (6:13/km), Boulder Creek Loop takes about 10 h 32 min of moving time. At 8:00/mi (4:58/km) it takes about 8 h 25 min, and at 12:00/mi (7:27/km) about 12 h 38 min. The times come from the grade of every 100 m of the route. Stops are not included.

How much elevation gain does Boulder Creek Loop have?

Boulder Creek Loop has 11,029 ft (3,362 m) of elevation gain over 34.7 miles (55.9 km). That averages 318 ft of gain per mile.

How difficult is Boulder Creek Loop?

The difficulty score for Boulder Creek Loop is 15 of 100. That is harder than 86.7% of routes at a similar distance. About 39% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Boulder Creek Loop?

The longest climb on Boulder Creek Loop runs 7.9 miles (12.8 km) and gains 4,450 ft (1,357 m). The steepest climb grade on the route is 40.3%.