Hills Killer mountain bike challenge Choose from 13, 26 or 52 mile courses and take on the challenge of an orienteering event against the clock as you pit your bike against the 3, 7 or 14 Hills.

The ride is made up of a series of checkpoints that are placed across the island, which will be identified by an Ordnance Survey grid reference and orange tape will be placed at each location. The co-ordinates for these check points will be given to you on the day.