The Red Reef Trail is a glorious (and popular) canyon hike in the Red Cliffs Recreation Area north of Harrisburg, which is part of the Red Cliffs Desert Reserve. There was no parking available at the Red Cliffs Campground and trailhead when I visited on a Sunday earlier this month, but the crowds had cleared by Monday. The trail meanders below redrock cliffs to an alcove and then a narrow slickrock canyon with a short waterfall and swimming hole.
Directions • From Interstate 15, take the exit to Leeds and turn southwest onto the town's Main Street/Old U.S. Highway 91. Continue 3.5 miles on this road alongside I-15 to Harrisburg, where you will take a signed underpass that runs northwest below I-15 to a T-junction. Turn southwest and continue a quarter-mile around the bend in the road to the ranger booth. Continue one mile north to the campground and pay the $5 fee at the kiosk. The trailhead is on the northwest corner of the campground. Day-use parking is marked.