Course
Long-distance mountain challenge in the Black Mountains and the south Wales valleys, with 50, 30 and 20 mile route options. The route climbs Deri, Loxidge Tump and Skirrid by way of Cwmyoy, Llanthony and Pandy, crosses the Blaenavon World Heritage landscape and Coity Mountain, and finishes along the Monmouthshire & Brecon canal.
Key dates
- ·RegistrationNot open yet
- ★Race dayApril 2027 · date to be announced
About
The LDWA's toughest mountain event is back – now with a new 20-mile route option that also explores the Black Mountains. Tackle sections of the cancelled Y 100 Sir Fynwy and the classic Valleys 100 route. Expect epic climbs through the Black Mountains such as Deri, Loxidge Tump and Skirrid via Cwmyoy, Llanthony and Pandy. Then venture into Blaenavon's World Heritage landscape, Coity Mountain, and finish along the Monmouthshire & Brecon canal.
Save Cymoedd Sir Fynwy to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Beast of the Beacons
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Newport Marathon Festival
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Trawsfynydd Lake Race
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.