STILLHOUSE 100K 2027

The Stillhouse 100K is an out-and-back of the cult classic point-to-point Upchuck 50K, run on the technically challenging Cumberland Trail singletrack. The course features huge climbs and descents into Soddy Creek, Possum Creek, and Rock Creek. With close to 12,000 ft of elevation gain, the "double" is easily one of the harder 100K courses in the Southeast — a serious endeavor that's quite possibly your hardest 100K to date. The race is not open to beginner ultra runners; it's the perfect course to test the mettle of seasoned ultra runners looking to take the next step toward a 100 miler. New start time for 2027: 5:00 AM (previously midnight).

100K out-and-back on the Cumberland Trail near Soddy Daisy, TN. Roughly 12,000 ft of elevation gain. Aid stations approximately every 10 miles. Drop bags allowed at all three aid stations.

Awards — Awards presented after the race. All finishers receive race swag.

Start/Finish: 190 Depot St, Soddy Daisy, TN. Pacers allowed from the turnaround (mile 31) at Leggett Rd aid station, and may also be picked up at Heiss Mountain Rd aid station (mile 49). One pacer per runner at a time. Crew access at Heiss Mountain Rd (outbound mile 18), Legget Rd (mile 31), and Heiss Mountain Rd (inbound mile 49). AllTrails map: https://www.alltrails.com/explore/map/map-64c3182--47. Registration opens June 1, 2026 at 12:00 AM ET.