20 Mile Runs in Wales
Find your next 20 Mile race in Wales. Browse upcoming road and trail events below, with dates and locations to help you plan.
Most 20 mile races cluster in late winter and spring for a reason: they're the classic final rehearsal before a marathon, with marshals, aid stations and a medal instead of a lonely long run.
5 upcoming 20 Mile events in Wales
Libanus, Wales
31 Oct 2026
32K
Crickhowell, Wales
06 Mar 2027
10 Miles, 20 Miles, 40 Miles
Abergavenny, Wales
20 Mar 2027
10 Miles, 15 Miles, 17 Miles, 20 Miles
Crickhowell, Wales
17 Apr 2027
10 Miles, 20 Miles, 40 Miles
Talybont-on-Usk, Wales
01 Oct - 02 Oct 2027
32K, 64K
Search all running events to filter by location, date and terrain.