Etape Eryri Extreme ?
After completing the Etape Eryri (103 miles) this year I'm really tempted to give this a try next year: http://etapeeryri.com/content/xtrem
As I've never done a ride of this distance before i was wondering what anyone's thoughts were on this? if you have done anything like this then how did you find it? also how did you go about training for it?