There are two shorter distances as well, but if you fancy an even bigger challenge and taking on all the historic climbs of the event in one go, the self-guided supermaratona course could be the one ...

Rugged peaks, coastline views, lakes and forests are all present and correct, as is the Bwlch y Groes (aka Hellfire Pass) on the longer route options. It's one of the highest tarmac roads in Wales and ...