St. Charles Peak is a 9.9 mile point-to-point trail located near Rye, CO and is rated as difficult. The trail is primarily used for hiking and is accessible from June until August.
Didn't complete the hike since I got started late and some weather started coming in, but the condition was good for the most part. Trail was generally visible, but had to look around a couple times when it was buried in snow. Probably more fun later in the season (or when not wearing shorts). Nice trail though.