http://www.cyclingnorthwales.co.uk/pages/cadair_idris.htm

On 20th April 2013, a small group of disabled riders will attempt to scale Cadair Idris, one of the tallest mountains in Snowdonia, using specially designed mountain bikes. The bikes, which are pedalled by hand rather than by foot, have especially low gears which will be essential on the steep and rocky upper slopes of the mountain. During the 10-hour epic, the riders will be assisted by a team of climbing and Mountain Rescue specialists who will help them negotiate the difficult stone chutes approaching the summit, and a team of MTB experts will form a guard of honour for the rapid return down the mountain.