Grindstone 100

George Washington National Forest, Virginia, United States

104.2 miles (167.8 km) · 19,603 ft elevation gain · Loop · trail · Race

Route facts

Distance	104.2 mi (167.8 km)
Elevation gain	19,603 ft (5,975 m)
Average gain	188 ft per mile (36 m per km)
Longest climb	6.2 mi, 2,014 ft of gain
Steepest climb grade	145.6%
Runnable	63% of the route
Climbs / descents	9 climbs, 8 descents
Profile shape	Up, then down
Difficulty score	11.9 of 100
Surface	trail
Route shape	Loop
Type	Race

Grade breakdown

Grade band	Share of route
Flat	31%
Mild uphill	12%
Moderate uphill	15%
Steep uphill	10%
Mild downhill	11%
Moderate downhill	10%
Steep downhill	12%

Questions about Grindstone 100

How much elevation gain does Grindstone 100 have?

Grindstone 100 has 19,603 ft (5,975 m) of elevation gain over 104.2 miles (167.8 km). That averages 188 ft of gain per mile.

How difficult is Grindstone 100?

The difficulty score for Grindstone 100 is 11.9 of 100. That is harder than 75.9% of routes at a similar distance. About 63% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Grindstone 100?

The longest climb on Grindstone 100 runs 6.2 miles (9.9 km) and gains 2,014 ft (614 m). The steepest climb grade on the route is 145.6%.