The Strathpuffer is an annual amateur 24-hour winter Mountain bike race in the Scottish Highlands.
It was conceived in 2005 in response to a request from BBC Scotland's 'The Adventure Show' for a winter endurance event that they could televise.
It was not expected to attract a lot of entries and the organisers were surprised at the 300 they got that year.
The circuit is circa 12.5 kilometre route through the Torrachilty Forest, on the outskirts of Contin.
[3][4] By that point it had established a reputation as being one of the toughest mountain bike events in the world.