Mike Walters: Yellow Fork is a surprisingly nice trail. Among the many options are two main choices: there's a 7-mile singletrack loop ride and there's a smooth 2-mile doubletrack ride in Yellow Fork Park.
Mike Walters: This trail is multi-user trail in Corner Canyon. The trail itself is only 2.1 miles long, but the shortest loop ride would be 4.6 miles. The trail is easier-intermediate in difficulty.
Mike Walters: World-famous Slickrock! This 10.6 mile loop twists & rolls through Navajo sandstone to a breathtaking view over the Colorado River. I would rate the Slickrock high technical & aerobic difficulty.
Mike Walters: The Dog Lake trail is one of the classic Salt Lake City rides. If you're a Wasatch biker, you simply have to make this trip. The trail is smooth and fast and the wildflowers and trees are awesome.
Mike Walters: This little series of singletrack loops lies alongside the Jordan River in Murray. The Germania Dirt Trail, as far as I know, is the only official bicycle singletrack on the Salt Lake Valley floor.