Matthews-Winters / Dakota Ridge
Rated: Intermediate to Advanced (with the very beginning of the trail rated Beginner. Once you take the trail to where it takes two tight downhill switchbacks into the ravine, a beginner should be warned that the trail becomes very rocky if on the lower trail OR very rocky with a nice climb up the plateau (Morrison Slide Trail) with a gnarly downhill on the south side. Dakota Ridge (across the road from the Matthews-Winters Trailhead) is an ADVANCED trail.
Directions: Take I-70 west out of Denver. Go past the 470 exit, and take the very next exit for Morrison. At the end of the exit, take a left (south) onto Colorado Hwy 26 at the light. Go under the I-70 overpass, and the park will be on your right 100 yards later. Trailhead is on SE side of the lot. http://mapq.st/Aec1dt