SALT LAKE CITY (AP) -- The Grand County sheriff's office says an Idaho man has died while mountain biking in Moab.

Todd Johnston, 42, of Ketchum, was on the Gold Bar Rim Trail Friday when he complained to friends about being tired and stopped to walk his bike.

Johnston's friends kept riding. When he didn't catch up, they doubled back to find Johnston collapsed. A group of motorcyclists had found Johnston and were performing CPR.

In a news release, Grand County officials say emergency crews unsuccessfully tried to revive Johnston for about an hour, using both CPR and a defibrillator.

Information from: The Salt Lake Tribune, http://www.sltrib.com

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