STV Tonight, 20:00-21:00
"Adventurer and world record breaking cyclist Mark Beaumont has set himself a new challenge, to raise money for the STV Appeal 2013. He has ditched the bike and must cover 230 miles of Scotland under his own steam in ten days. Following the Highland Fault Line from the west to the east coast, Mark has to swim 11 miles of open sea and cold lochs, run 219 miles over mountains and tough terrain, and face miles of unforgiving tarmac."