2023 Updates:
25 Miler has evolved into a full Marathon. 100 mile female runners will receive a 25% discount on registration. Email greentunnelevents@gmail.com to receive code before signing up!

April 1, 6am: 50 Milers
April 1, 6:05am: 100 Milers
April 2, 6:00am: Marathoners

Marathon = 3,000ft of climbing
50 miler = 5,700ft of climbing
100 miler = 11,400ft of climbing

Franklin State Forest, Tennessee

8 hour cutoff for Marathoners
16 hour cutoff for 50s
32 hour cutoff for 100s

  • Rim Runner showcases Franklin State Forest's West Rim and West Side trails: a big trail loop that runs miles along the rim overlooking the coves on either side. The start time is intentional to get runners to the East side of the course for the sunrise.
    The course is very runnable. Terrain is typical for the area: roots, rocks, dirt…nothing too crazy. A few nice creeks, small bridges and even a waterfall/swimming hole right off the course.

    Marathon starts on Sunday so that we take up less of the parking area. While not required by the Forest, we don’t want to be jerks to the locals.

    The name: Rim Runner is named after how you will be running along the rim of a cove and also references Tennessee’s history of rum running (aka bootlegging) during the prohibition.