Jefferson County, Washington, United States
43.3 miles (69.6 km) · 12,073 ft elevation gain · Loop · Route
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) | 10 h 31 min |
| 10:00/mi (6:13/km) | 13 h 09 min |
| 12:00/mi (7:27/km) | 15 h 47 min |
| 14:00/mi (8:42/km) | 18 h 25 min |
| Distance | 43.3 mi (69.6 km) |
| Elevation gain | 12,073 ft (3,680 m) |
| Average gain | 279 ft per mile (53 m per km) |
| Longest climb | 3.7 mi, 2,079 ft of gain |
| Steepest climb grade | 42.1% |
| Runnable | 46% of the route |
| Climbs / descents | 5 climbs, 5 descents |
| Profile shape | Up, then down |
| Difficulty score | 14.5 of 100 |
| Route shape | Loop |
| Type | Route |
| Grade band | Share of route |
|---|---|
| Flat | 6% |
| Mild uphill | 13% |
| Moderate uphill | 9% |
| Steep uphill | 25% |
| Mild downhill | 17% |
| Moderate downhill | 10% |
| Steep downhill | 20% |
At a flat-ground pace of 10:00/mi (6:13/km), Mount Seattle via Irely Lake takes about 13 h 09 min of moving time. At 8:00/mi (4:58/km) it takes about 10 h 31 min, and at 12:00/mi (7:27/km) about 15 h 47 min. The times come from the grade of every 100 m of the route. Stops are not included.
Mount Seattle via Irely Lake has 12,073 ft (3,680 m) of elevation gain over 43.3 miles (69.6 km). That averages 279 ft of gain per mile.
The difficulty score for Mount Seattle via Irely Lake is 14.5 of 100. That is harder than 85.9% of routes at a similar distance. About 46% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.
The longest climb on Mount Seattle via Irely Lake runs 3.7 miles (6.0 km) and gains 2,079 ft (634 m). The steepest climb grade on the route is 42.1%.
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