The full Barkley Fall Classic distance. Published as a 50-kilometer race, but the actual distance is not fixed: the course is redesigned every year and not revealed until the night before, and GPS-watch accounts from individual editions have recorded distances well past 50K (see difficulty_notes). A cutoff at the course's Decision Point diverts any runner who has not reached it in time onto the Marathon course instead of pulling them from the race.
A 50-kilometer race at Frozen Head State Park, Wartburg, Tennessee, created by Lazarus Lake and Steve Durbin to give runners "a taste of what the Barkley Marathons is all about": the same mountains, some of the same signature climbs, a course map withheld until the night before, and no GPS. Runners who miss the cutoff at the course's Decision Point are diverted to a shorter Marathon finish rather than pulled from the race.
Founded in 2014 by Lazarus Lake (Gary Cantrell, creator of the Barkley Marathons) and Steve Durbin of Durbin Race Management. The 2026 edition is billed by the race itself as "Barkley Fall Classic XIII" (its 13th running), which is consistent with a 2014 first year. UltraRunning Magazine's results archive for the race begins with a "30 Miles" category in 2014, switching to "50 KM" from 2015 onward.
| Mile | Station | Cutoff | Crew | Bag | Pacer | Med | To next |
|---|---|---|---|---|---|---|---|
| 0.00 | Start / Frozen Head State Park | ? | ? | ? | ? | ? | ? |
| ? | Decision Point (Marathon / 50K split) | ? | · | ? | ? | ? | ? |
| ? | Finish / Frozen Head State Park | ? | ? | ? | ? | ? | ? |
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