Devils Triangle (TN-116 Cumberland Mountains)
A notoriously rugged and unforgiving loop through the historic coal country of the Cumberland Plateau west of Oak Ridge. TN-116 circles past the towering stone walls of Historic Brushy Mountain State Penitentiary and climbs Fork Mountain. The road is marked by ultra-tight hairpins, active coal truck traffic, sudden pavement ripples, gravel wash from unpaved spur roads, and wooden guardrails bordering sheer drop-offs. Demands intense throttle control and aggressive countersteering; widely respected as Tennessee's grittiest mountain loop.
Join free with 1-tap Google or Apple login to bookmark this route across your devices.
Save Route (Free)
Certified Motorcycle Repair
Rider-Friendly Lodging
The undisputed epicenter of motorcycle culture in the eastern United States, sitting at Mile 0 of the Tail of the Dragon (US-129). An electric, adrenaline-fueled carnival of sportbikes, adventure tourers, and interstate cruisers. Smells of warm tire rubber, two-stroke exhaust, and hickory smoke.
Tank-Bag Quick Reference Sheet
Frequently Asked Questions
How many curves and miles is Devils Triangle (TN-116 Cumberland Mountains)? ▼
Devils Triangle (TN-116 Cumberland Mountains) spans 44 miles and packs approximately 310 curves (7.0 curves per mile) with an elevation delta of 800 ft - 2,750 ft and technical rating 9.0/10.
Where are the start and end coordinates? ▼
The route starts at Petros / Brushy Mountain State Penitentiary, TN (Latitude 36.0881, Longitude -84.4449) and finishes at Oliver Springs / Windrock, TN (Latitude 36.0465, Longitude -84.3438).
How can I download the GPX file for GPS navigation? ▼
Click the "Download Free GPX" button on this guide. The standard XML file is 100% free and ready to load into Garmin zūmo, BMW Motorrad Connected, Rever, Scenic, or Google Maps.