Before you go
Very popular with bikes and closely watched by the police. Weekday mornings are best.
Which way round
Either way across the Black Mountain.
When it’s open
Normally open all year, though snow can close it for a day or two.
The route
- Llandovery
- Black Mountain
- Gwaun-Cae-Gurwen
Driven it recently? Roadworks, a new surface, a closure we should know about? Tell us and we’ll update this page.