While in Sin City for the 2007 Academy of Country Music Awards, dozens of hog-lovin’ stars set off May 13 on the fourth annual ACM celebrity motorcyle ride. In all, more than 1,500 people participated in the event, which raised money for the ACM Charitable Fund.

Check out our exclusive online photo gallery showcasing the stars gathered at Las Vegas Harley-Davidson, where the riders revved up before hitting the road.