Fairly easy, flat dirt road with some strenuous uphill climbs.
Fallow Willow Creek road north and turn off just past Long Branch Lake. Continue onto trail 122 to Lake Agnes. The last 1/2 mile to Lake Agnes is very steep. From there continue to the turn off for trail 120 Willow Creek, there are a few short walking sections that lead to a long descent through the woods, back to the trailhead.
How to get there:
Take Interstate 15 North of Dillon to Apex junction. Follow Birch Creek road to Aspen picnic area and take Willow Creek road on the right past turnoff for Gorge Creek Trail to the Uphill Creek Trail turnoff.