The Stillhouse 100K, presented by Bad Beard Events, offers an unparalleled challenge for seasoned ultra-runners on April 18, 2026, in Soddy-Daisy, TN. This demanding 100-kilometer trail race is renowned as an out-and-back of the "cult classic" Upchuck 50K, tracing the technically challenging single track of the Cumberland Trail. Runners will face close to 12,000 feet of elevation gain, navigating huge climbs and descents into Soddy Creek, Possum Creek, and Rock Creek. This course is widely considered one of the harder 100K endeavors in the Southeast, designed to test the mettle of those looking to step up their ultra-running game.

Participants can expect a serious undertaking, with typical race day conditions seeing highs around 75F and lows around 51F, with an 18% chance of precipitation, making for variable but generally favorable running weather. The race features three well-stocked aid stations approximately every 10 miles on the outbound journey, providing water, Powerade, chips, and gummy bears. The turnaround at mile 31 (Legget Rd) offers more substantial fare like ramen, quesadillas, or grilled cheese sandwiches, and is a designated drop bag location. Pacers are permitted from this mile 31 aid station, as well as at the Heiss Mountain Road aid station (mile 49 inbound). The start and finish are conveniently located at 190 Depot St, Soddy Daisy.

The Stillhouse 100K is not for beginners, requiring a mandatory gear list to ensure runner safety on this rugged terrain. Reviews from past participants highlight the impressive course markings and generously stocked aid stations. This event promises a truly memorable and arduous experience, pushing runners through stunning natural scenery and formidable climbs, solidifying its reputation as a must-do for experienced ultra-distance athletes.