Beast of the Blacks Ultra 40 mi plus 20 & 10 mile
Available distances
About
Beast of the Blacks Ultra 40 mi plus 20 & 10 mile takes place on 6 March 2027 in Crickhowell, Wales. Three off-road distances are on the programme on the same day, with staggered starts from longest to shortest: 40 miles (65 km) at 08:00, 20 miles (32.5 km) at 09:00 and 10 miles (17 km) at 10:00. No official elevation gain has been published for these courses.
The range of formats lets you choose your level of commitment within the same event. The 10-mile race suits runners used to long trail outings who want to discover Welsh mountain running; the 20-mile race already calls for experience of three- to four-hour efforts; the 40-mile race is a true ultra and requires a specific training block, with back-to-back long runs at weekends and descent work. An early-March date means building volume through the winter, with kit suited to potentially muddy ground and long stretches of self-sufficiency.
Prepare for Beast of the Blacks Ultra 40 mi plus 20 & 10 mile with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
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Races nearby
Other upcoming races around Crickhowell.
Trails & Tarmac Back Yard Ultra - Winter
Feb 6, 2027 · Llangattock · 2 mi away
1 h
Epona 100
May 8, 2027 · Llanfoist · 5 mi away
100 mi · 62.1 mi
Beast of the Beacons Ultra 40m plus 20m & 10mile
Apr 17, 2027 · Llangynidr · 5 mi away
10 mi · 20 mi
Beacons Marathon and Ultra
Nov 9, 2026 · Talybont-on-Usk · 8 mi away
45.8 mi · 26.9 mi
Brecon Beacons Trail Challenge
May 3, 2027 · Talybont-on-Usk · 8 mi away
32.3 mi · 26.7 mi · 15.5 mi · 6.8 mi
Beacons Ultra and Trail Marathon
Nov 7, 2026 · Talybont-on-Usk · 8 mi away
13.1 mi · 26 mi · 47 mi