His only character flaw is a weakness for fell running - he is dangerously close to giving up the grandeur of the road and track to the darkside of running up mountains .
Robbie is also a talented writer and outspoken advocate for the sport of ultrarunning .
Robbie 's only character flaw is a weakness for fell running - he is dangerously close to giving up the grandeur of the road and track to the darkside of running up mountains .
Robbie is also a talented writer and outspoken advocate for the sport of ultrarunning .