Rownd Mynydd Du (Black Mountains Round) (United Kingdom)

Powys, Cymru / Wales, United Kingdom

73.4 miles (118.1 km) · 16,063 ft elevation gain · Loop · trail · 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)	18 h 02 min
10:00/mi (6:13/km)	22 h 32 min
12:00/mi (7:27/km)	27 h 02 min
14:00/mi (8:42/km)	31 h 33 min

Route facts

Distance	73.4 mi (118.1 km)
Elevation gain	16,063 ft (4,896 m)
Average gain	219 ft per mile (41 m per km)
Longest climb	3.8 mi, 1,782 ft of gain
Steepest climb grade	66.3%
Runnable	61% of the route
Climbs / descents	6 climbs, 7 descents
Profile shape	Up, then down
Difficulty score	10.1 of 100
Surface	trail
Route shape	Loop
Type	Route

Grade breakdown

Grade band	Share of route
Flat	10%
Mild uphill	17%
Moderate uphill	9%
Steep uphill	15%
Mild downhill	24%
Moderate downhill	9%
Steep downhill	15%

Questions about Rownd Mynydd Du (Black Mountains Round) (United Kingdom)

How long does it take to run Rownd Mynydd Du (Black Mountains Round) (United Kingdom)?

At a flat-ground pace of 10:00/mi (6:13/km), Rownd Mynydd Du (Black Mountains Round) (United Kingdom) takes about 22 h 32 min of moving time. At 8:00/mi (4:58/km) it takes about 18 h 02 min, and at 12:00/mi (7:27/km) about 27 h 02 min. The times come from the grade of every 100 m of the route. Stops are not included.

How much elevation gain does Rownd Mynydd Du (Black Mountains Round) (United Kingdom) have?

Rownd Mynydd Du (Black Mountains Round) (United Kingdom) has 16,063 ft (4,896 m) of elevation gain over 73.4 miles (118.1 km). That averages 219 ft of gain per mile.

How difficult is Rownd Mynydd Du (Black Mountains Round) (United Kingdom)?

The difficulty score for Rownd Mynydd Du (Black Mountains Round) (United Kingdom) is 10.1 of 100. That is harder than 75% of routes at a similar distance. About 61% of the route is runnable at typical trail effort; the rest is steep enough that most runners hike.

What is the longest climb on Rownd Mynydd Du (Black Mountains Round) (United Kingdom)?

The longest climb on Rownd Mynydd Du (Black Mountains Round) (United Kingdom) runs 3.8 miles (6.1 km) and gains 1,782 ft (543 m). The steepest climb grade on the route is 66.3%.