Chattanooga 100K is the 100km ultra trail at Ultra Trail Chattanooga by UTMB 2027 (Chattanooga, TN, Erlanger Park, United States). The race starts on June 5, 2027 at 06:00 AM. It starts in Chattanooga, TN, Erlanger Park and finishes in Cloudland Canyon State Park. The time limit is 18 h.
Start easy, build your effort, and go all out at the finish.
The course climbs 2437m+. With 24m/km of climbing, the course is predominantly runnable. By gradient, 30% of the distance is uphill, 27% downhill and 43% flat. The longest climb runs 9.7km at an average 4.0% grade (391m of vertical). The steepest climb averages 24.6% over 0.4km. Flat-equivalent effort: 123.8 FlatKM.
Poles bring little benefit here: only about 3.5km of pole-friendly terrain.
Quad damage risk is moderate (index 23 of 100), with 38% of the load in the first half: 0 descents deserve a plan and a couple of downhill sessions before race day.
On race day, start temperatures have historically ranged from 15°C to 21°C, with around 24°C at the highest point; the chance of precipitation is about 49%. Heavy rain of 10.0mm or more falls on about 13% of days around this date.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Chattanooga 100K.
Other distances of Ultra Trail Chattanooga by UTMB 2027
Official websitechattanooga.utmb.world