Hardrock 100

San Juan County, Colorado, United States

98.9 miles (159.2 km) · 31,608 ft elevation gain · Loop · trail · Race

Hardrock 100 is a 98.9-mile loop race in San Juan County, Colorado, United States, gaining 31,608 feet of elevation. The race follows a rolling elevation profile. The terrain breaks into 19 distinct sections including 6 significant climbs. The longest climb covers 10.9 miles gaining 5,367 feet at an average 18.2% grade. About 40% of the terrain is runnable, with significant hiking sections. The race opens with mixed terrain and finishes with flat terrain.

Route facts

Distance	98.9 mi (159.2 km)
Elevation gain	31,608 ft (9,634 m)
Average gain	319 ft per mile (60 m per km)
Longest climb	25.9 mi, 2,270 ft of gain
Steepest climb grade	265.1%
Runnable	40% of the route
Climbs / descents	6 climbs, 9 descents
Profile shape	Rolling
Difficulty score	21.5 of 100
Surface	trail
Route shape	Loop
Type	Race

Grade breakdown

Grade band	Share of route
Flat	20%
Mild uphill	10%
Moderate uphill	10%
Steep uphill	25%
Mild downhill	5%
Moderate downhill	6%
Steep downhill	25%

Questions about Hardrock 100

How much elevation gain does Hardrock 100 have?

Hardrock 100 has 31,608 ft (9,634 m) of elevation gain over 98.9 miles (159.2 km). That averages 319 ft of gain per mile.

How difficult is Hardrock 100?

The difficulty score for Hardrock 100 is 21.5 of 100. That is harder than 92.3% of routes at a similar distance. About 40% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Hardrock 100?

The longest climb on Hardrock 100 runs 25.9 miles (41.7 km) and gains 2,270 ft (692 m). The steepest climb grade on the route is 265.1%.