Named after their "snow-capped appearance in colder months," this route through Frozen Head State Park is nowhere near as technical as the Barkley. Along this 15-mile circuit, you will tour the park's four most notable peaks, including the observation deck on Frozen Head that was erected in 2006. From this grandstand, you will have unparalleled views of "East Tennessee's three main physiographic features: the Cumberland Plateau, the Tennessee Valley, and across the valley, the Great Smoky Mountains."

As mapped, park at the visitor center to begin your run. Both water and restrooms are nearby. If you can find parking near Big Cove Campground, you could also begin there. The loop can be run in either direction, both beginning with a long series of switchbacks to the top of a ridge. Water may be available along the trail at the beginning and end of the run, but is mostly unavailable along the ridge. A 2-liter hydration vest and trekking poles are highly recommended for this epic endeavor.

Sources: https://en.wikipedia.org/wiki/FrozenHeadStatePark https://en.wikipedia.org/wiki/BarkleyMarathons https://en.wikipedia.org/wiki/FrozenHeadStatePark https://tnstateparks.com/parks/frozen-head