Lambs Canyon is an awesome 4 miles out-and-back trail you are sure to fall in love with. It doesn't get very much sunlight so it stays perfectly cool during all seasons. This trail leads through dense spruces and aspens giving you that feeling of really being out in the woods.
Take I-80 East through Parley's Canyon and get off at the Lambs Canyon Exit. Stay right off the exit and start heading up the canyon. You will follow the road 1.5 miles. You will see the trail head on the right side of the road with a small area to park on the left next to the bathrooms.
The trail is pretty gradual but gets slightly steep at some points. After traveling 2 miles to the top of Lambs, you can either drop into Millcreek Canyon or you can turn around and head back the way you came. It's a pretty non-technical trail, allowing you to climb and descend as fast as you want.