Three Sisters Ultra Festival

Maryville, United States • 6 Jun 2026

Three Sisters Ultra Festival

The Three Sisters Ultra Festival is a timed trail event in the Maryville College Woods near Maryville, Tennessee. The eleventh running offers 24 hour, 12 hour, and 6 hour timed options, with relays for team entries and day or night choices for the 6 and 12 hour events.

The course is a 2.2-mile loop that begins and ends at the McArthur Pavilion and includes about 120 feet of elevation gain per loop. Aid and access to a warm fireplace are available each loop. Participants may set up a personal aid area under the pavilion or in the large yard around it.

Distance equivalents for the loop course:

  • 12 loops = Marathon
  • 15 loops = 50K
  • 29 loops = 100K
  • 46 loops = 100 miles
  • 56 loops = Course record distance (121.875 miles)

Additional on-site features include live music and other activities such as a nine-hole disc golf option. The race will use chip timing; bibs should be placed on the front of the body and not folded so timing readers can register laps. Aid station amenities are reserved for runners and registered pacers; pacers must pick up and wear a bib at packet pickup.

Packet pickup is at the McArthur Pavilion Friday evening and again the morning of the event. Race items will not be mailed; someone else may pick up a packet on a participant’s behalf. Registration remains open through early June, though apparel and swag are not guaranteed for registrations after May 25 at midnight. Visit the organization's website for the most recent information.

Race information

12 Hour
12 Hour Night
24 Hour
6 Hour
6 Hour Night
Visit the organization's website for the most recent information.
Trail runs nearby

Altra Trail Fun Run on May 10 in Knoxville features a designated 3 miles untimed trail route with on-site Altra shoe demos and a post-run gathering with coffee and optional breakfast burritos; registration is free.

SwimRun Knox on May 31, 2026 features a 12.25 mile swimrun at Mead's Quarry and Ijams Nature Center plus a 3.18 mile trail 5k and a 13.1 mile trail half marathon, with team and individual entry options.

Experience the moderately technical and flowing trails of Knoxville at Sharp's Ridge Rambler. This event features 7 mile, 4 mile, and 1 mile trail races that climb and descend the scenic ridges of the park.

A patriotic July 4 running event at the Madisonville Kefauver Pavilion offering 17.76 miles and 7.4 miles with in-person and virtual options. A ruck division with specified pack weights runs on an asphalt greenway and bike trail course.

Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.