A 5 mile horseback ride from the Skull Hollow trailhead is the start of the Cole Trail Loop.
Skull Hollow Campground off of Lone Pine Road is about an 8 mile drive from Smith Rock State Park.
This will take you to the park boundary at the Burma Road Trail.
From there you can ride down the Burma Road until it connects to the Wolf Tree Trail.
Want to do 20 miles? Stop at the horse ford for an additional 1.42 miles to double back to the Skull Hollow Campground.
Care to do more exploring on the BLM trails?