BIG COTTONWOOD CANYON — A mountain biker was critically injured while riding in Big Cottonwood Canyon Thursday night.

The 35-year-old man was biking on the Mill D North trail with another biker when he crashed and catapulted over the bike's handlebars.

The other biker came around the bend and found the victim lying face down, officials said. When the biker rolled the victim over, the man was hardly breathing.

Unified Police Sgt. Corey Latham said the victim's friend, who has had EMT training, immediately rolled the man over, opened up his airway and started CPR.

It took emergency personnel two hours to reach the victim, stabilize him and transport him a half-mile off the trail to a waiting helicopter.

The victim was flown to Intermountain Medical Center in Murray in critical condition with possible spinal cord injuries.

The victim lost consciousness a few times on the flight to the hospital, Unified Fire Authority Capt. Brad Taylor said.

— Lana Groves