Three Forks Loop features 16 miles of hiking trails near Spanish Fork, UT.
Driving south on I-15, take the first Spanish Fork (US-6 to Price and Manti). Go east on US-6 and enter Spanish Fork Canyon. Drive 5.5 miles from the mouth of the canyon then turn left on the Diamond Fork road. Drive 10 miles and watch for a gravel turnoff on the right that crosses Diamond Fork Creek to a parking area.
http://www.tripleblaze.com/trail.php?c=3&i=1633