The classic end-to-end of mainland Britain: Land’s End in Cornwall to John o’ Groats in the far north of Scotland. Ollie and three teammates completed 1,491km (926 miles) in 8 days in May 2014, raising over £7,000 for St Mungo’s Broadway and The Royal Marsden.
The trip was blogged at the time: the route plan, photos and stats and a brain dump.