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