The Bones Trail is a great singletrack alternative to the doubletrack of Lower Raptor
. Starting from the south and heading north, the trail is virtually all uphill, but nothing too strenuous. It's a steady 5.8 miles for the entire trail section. It crosses Rusty Bucket, which you can opt for as a cutoff point, but take it to the end and reap the benefits of all the uphill by bombing down Upper Raptor
, to Thumper
to Lime Kiln
for some super fun downhill.