Paul Kerr, 45, left his home Sunday morning, for a trip over Gray Creek Pass, a remote gravel road which links the east and west Kootenay regions of southeastern B.C.
He was due back that afternoon, but didn't show up.
On Monday, volunteer search and rescue teams from Cranbrook, Kimberley, Sparwood, Fernie, Creston and Invermere looked for Kerr, but found nothing, said RCMP. Neither did a helicopter or fixed wing aircraft that searched the area for two days.
Then, at about 7:00 p.m. MT Tuesday, mountain bikers, who had no idea about the extensive search, found Kerr about five kilometres west of Kimberley, seriously injured and unable to free himself — but alive.
"He was not visible from the road. It's pure luck these mountain bikers went down there," said Cpl. Chris Newel of Kimberley RCMP.
"He could have been there for a lot longer and the outcome less favourable."
Police believe Kerr missed a turn on a series of curves, and his motorcycle flew off St. Mary's Lake Rd. and landed out of sight.
Kerr has been taken to East Kootenay Regional Hospital, and his current condition is not known, said RCMP.