An ‘ultra’ runner is to attempt to cover the 134 miles of the John Muir Way in ‘Just One Day’. Mark Horne will start in Helensburgh at midday on Saturday April 25 and will aim to reach Dunbar 24 hours later in a bid to raise money for management and promotion of the route. The challenge will be filmed by the BBC for The Adventure Show. The route echoes John Muir’s own personal journey growing up in Scotland’s east coast town of Dunbar before travelling to the west coast, where he set sail for life in America. Mark, who will run the equivalent of five marathons back to back, said: “This run is my challenge but I hope people will have their own adventure.” To sponsor Mark visit: http://campaign.justgiving.com/charity/csgnt/jmwultra.