Trail Running Calendar Tennessee 2025-2026

The No Business 100 is a challenging 102-mile trail ultramarathon held annually in October, starting and finishing at Pickett CCC Memorial State Park in Jamestown, Tennessee. The single-loop course traverses the scenic and remote Big South Fork National River & Recreation Area, crossing between Tenn..

Firewater Ultra is a trail running event held in Greenback, Tennessee, featuring 100K and 50K distances, including a 50K relay and two 50K start options—Sunrise and Sunset. The race takes place on the scenic East Lakeshore Trail along the Tellico Reservoir, known for its well-maintained, runnable pa..

The Nashville Running Company's Shelby 6 Miler is a flat, fast trail race held in Shelby Park, East Nashville. Starting and finishing at the historic Cornelia Fort Airpark, the course features well-groomed primitive trails, making it ideal for first-time trail runners or those aiming for a personal..

The Norris Ultra Dam Hard Trail Race is set to take place at Norris Dam State Park in Tennessee, featuring two challenging events: a 50k and a 25k race. Both courses traverse scenic single-track trails and jeep roads within the park and the Norris Municipal Watershed. Participants can expect multipl..

The Natchez Trace Trail Run, held in Franklin, Tennessee, offers a challenging and scenic experience along the historic Natchez Trace Trail. Scheduled for November 1, 2025, the event features multiple distances: a 50-mile out-and-back ultra, a marathon, a half marathon, and a 13-mile rucking race. T..

The Urban Nature 10k in Chattanooga, TN, offers a unique running experience combining urban roads and scenic trails. The 10K course starts and finishes at Coolidge Park under the Market Street Bridge by the Tennessee River, providing one of the most picturesque race finishes in the city. Runners tra..

The Barn Creek Backyard Ultra is a challenging endurance running event held in Jamestown, Tennessee, featuring a 4.167-mile out-and-back course through woods on private property near Colditz Cove State Natural Area. The terrain includes gravel, road, and trail with under 300 feet of elevation gain...

The Mamba 100 in Memphis, TN, is a premier ultramarathon event featuring distances of 100 miles, 100K, 50K, and 25K. The race takes place on a fast, scenic 14.35-mile loop along the Wolf River, primarily on single-track trails with low elevation gain, designed for speed and fun. The event offers a v..

The Bad Beard Events River Gorge Trail Race, held near Chattanooga, Tennessee, offers three challenging distances: 6.5, 10.2, and 20 miles. Set in the scenic Prentice-Cooper Wildlife Management Area, the course features technical single-track trails through Mullens Cove and Pot Point loops, showcasi..

The Fall Creek 100 is an ultramarathon event held in Spencer, Tennessee, featuring 50k, 100k, and 100-mile race distances. The course showcases the scenic Fall Creek Falls State Park, known for its pine forests, mossy, fern-lined trails, and multiple suspension bridges crossing Cane Creek Falls and..

The Fiery Gizzard Run, held at Foster Falls State Park in Tennessee, features challenging half and full marathon trail races on one of the Top 25 Trails in the US. The course offers stunning waterfalls, rock formations, and expansive overlooks, with mostly flat ridgeline running punctuated by steep,..

The Tennessee Mile is a challenging looped trail race held on private land near Franklin, Tennessee, featuring a 1.1-mile course with 340 feet of elevation gain. The route includes two steep climbs, runnable sections, and a downhill stretch through a field to the start/finish area, following a wide..

The Dirty South Trail Races, scheduled for December 7, 2025, in Knoxville, TN, features a variety of events including a Half Marathon, 10K, and a Kids Trail Mile. The race starts and finishes at Mead's Quarry, traversing scenic areas like the Forks of the River Wildlife Area and Ijams Nature Center...

The Bell Ringer Trail Run is held annually at Montgomery Bell State Park in Burns, Tennessee, offering 50K, 25K, and 15K trail race options. The event showcases over 30 miles of scenic trails known for moderate difficulty with multiple uphill and downhill sections, suitable for both experienced and..

The Moccasin 24 is a unique ultrarunning event held in Memphis, Tennessee, featuring a 24-hour run on a 4-mile loop course along the scenic Wolf River Trails. Runners can complete as many miles as they wish within the 24-hour period, starting at any time during the event. The course is decorated wit..

The Snow Bull 6/12 Hour Endurance Runs take place at Camp Chet in Whitwell, Tennessee, set on nearly 1,000 acres of private forested land on Whitwell Mountain, part of the Cumberland Plateau. The event features a half-marathon, 6-hour, and 12-hour endurance runs on a challenging 5-mile loop course w..

The MAD Backyard Ultra is an endurance running event held annually at Camp Jordan Park in East Ridge, Tennessee. Participants run a 4.167-mile loop every hour on the hour, continuing until only one runner remains. The flat, runnable course features a mix of exterior track, gravel, and grass surfaces..

The Black Toe Run is a challenging 12- or 24-hour trail running event held at Hardin Farm in Watertown, Tennessee. Participants run on a roughly 5-mile loop featuring about 1,000 feet of vertical gain, either solo or in teams of two or four, aiming to complete as many laps as possible within the tim..

Gone Loco is an endurance running event held in Athens, Tennessee, featuring a certified marathon course on the scenic Eureka Trail. The race offers three distances: a 33-mile (55k) ultra, an 11-mile run, and a new 11-mile ruck option, where participants carry weighted packs. The flat, gravel trail..

The River to Clouds Trail Run is a thrilling trail running event held at Ross' Landing, Riverfront Parkway, Chattanooga, Tennessee, set against the scenic backdrop of Lookout Mountain. Participants can choose from challenging distances including a 100-mile ultra, 50-mile race, a 27-mile "Barely Ultr..