We are climbing the highest mountains in England, Scotland and Wales.

Our train departs from Euston on Thursday afternoon, stopping at Crewe on the way to Snowdon which is climbed overnight. Then we then head for Ravenglass to climb Scafell Pike before a night on the train up to Fort William to climb the UK's highest mountain, Ben Nevis.

What's involved;

Some people estimate this is probably the equivalent of three half marathons on quite difficult terrain and of course there is little prospect of much sleep during the event - you will spend the first night climbing Snowdon and the second night sitting up on a train.