We're planning to get the train to Swansea at the weekend and ride to Brecon, stopping at a campsite overnight halfway (Grawen).

Anybody got any good routes? Hopefully we can get in some of Skyline at Afan and the Gap on the way.

mtb-wales is a good place to ask this one. You can take one of the national cycle trails (no 47, up through Neath and over to the east of Resolven) from Swansea to Afan, and then the Skyline to the NE corner and drop down. As for how to negotiate Merthyr I'm not too sure ;o)

Forgot to say, from the national cycle route you can join up with Skyline whilst you're up there, or drop down to Glyncorrwg, hit the cafe, then do Skyline from the start. From there to the Gap I've no idea though.