Barkley Marathons is a ~130 miles ultra marathon in Frozen Head State Park, United States. Distance: 209km. Elevation: 18,000m D+. Difficulty: legendary (Challenge Rating 90/100). DNF rate: 99%. Time limit: 60h. Surface: off-trail. Established 1986.
Barkley Marathons
Frozen Head State Park, Tennessee, United States
"The race that breaks everyone. 17 finishers in 40 years. No trail, no aid, no mercy."
The most exclusive and brutal ultra marathon on Earth — a secretive, nearly impossible 130-mile bushwhack through Tennessee wilderness.
The Course
Five loops of approximately 32km each through the rhododendron thickets, sawbrier hells, and coal-seam climbs of Frozen Head State Park in the Cumberland Plateau of Tennessee. Each loop gains roughly 3,600m of elevation over terrain that ranges from steep ridge scrambles to creek-bed wallowing. There is no trail — runners bushwhack through vegetation dense enough to shred clothing, skin, and morale simultaneously. Sections have earned names like Rat Jaw (a near-vertical climb through briars), Testicle Spectacle (self-explanatory), and Leonard's Butt Slide. The odd-numbered loops run clockwise; even-numbered loops run counter-clockwise, meaning runners must know the course in both directions. Two unmanned water drops are the only support on course. Since 2009, the route passes through the abandoned Brushy Mountain State Penitentiary itself, including a tunnel under the prison — the same walls James Earl Ray once scaled to escape.
mountainous
multi-loop
1,060m
Runner Experience
Standard aid station support with food, drinks, and basic medical assistance at regular intervals.
A legendary finish line atmosphere. Barkley Marathons is a bucket-list race with celebrations that match its reputation.
Race Day Weather
8°C
-2° – 15°
75%
45%
Unpredictable late-winter Appalachian weather. Temperatures can swing from below freezing at night to warm during the day. Rain, sleet, and fog are common. Snow is possible.
Stats & Records
1986
1
52:03:00
Brett Maune (2012)
59:58:21
Jasmin Paris (2024)
20
Entry
$1.60
December
instant
Lore & Trivia
The Barkley Marathons was born from a jailbreak. In 1977, James Earl Ray — the assassin of Martin Luther King Jr. — escaped from Brushy Mountain State Penitentiary in the Tennessee wilderness. After 54 hours on the run, he was recaptured just 13km from the prison walls. Gary "Lazarus Lake" Cantrell heard the news and thought: "I could do at least 100 miles." Nine years later, in 1986, he made good on the boast. The race he created is five unmarked loops through the briars, climbs, and hollows of Frozen Head State Park — roughly 100 miles with 18,000m of cumulative elevation gain, the equivalent of climbing Everest twice. There are no aid stations, no course markings, and no GPS allowed. Runners navigate by map and compass, finding books hidden along the course and tearing out the page matching their bib number as proof of passage. The start comes when Lazarus Lake lights a cigarette — at an unannounced time, on an unannounced day. Runners who drop out are serenaded by a bugler playing Taps. The race has had roughly 1,000 starters since 1986. Approximately 20 have finished. Cantrell modifies the course each year to ensure it remains, in his words, "at the very horizon of human potential."
- ▸ Only about 20 people have finished in nearly 40 years. Approximately 1,000 have started.
- ▸ Entry requires writing an essay on why you should be allowed to run. The entry fee is $1.60.
- ▸ The race start is signaled by Lazarus Lake lighting a cigarette. There is no set start time.
- ▸ Runners must tear out specific pages from books hidden on course as proof of passage.
- ▸ There are no aid stations, no course markings, and no pacers. You are alone in the wilderness.
- ▸ First-time runners must bring a license plate from their state or country — they hang from trees at camp.
- ▸ Returning non-finishers must bring an item of clothing as a donation, based on Laz's current needs.
- ▸ When a runner drops out, a bugler plays Taps. The yellow gate is the only finish line.
- ▸ Laz picks one runner he deems least likely to finish and gives them bib number one.
- ▸ The 2014 documentary "The Barkley Marathons: The Race That Eats Its Young" made the event world famous.
If you're going to face a real challenge, it has to be a real challenge. You can't accomplish anything without the possibility of failure.
For some people, to finish the Fun Run is the accomplishment of a lifetime. And for some of them, to finish one loop is the achievement of a lifetime. And for some people, just to get back to camp alive is all they want in the world.
He comes off as a sadist that's out to torture people and watch them fail, but he loves nothing more than to watch people succeed.
On the Barkley course, I felt stripped down to my elemental pieces.
Notable Editions
The First True Finish
Mark Williams of the United Kingdom became the first person to complete the full 100-mile version of the Barkley with a time of 59:28:48 — just 31 minutes inside the 60-hour cutoff. The race had existed for nine years before anyone finished it.
Six Seconds Too Late
Gary Robbins of Canada reached the yellow gate just six seconds after the 60-hour cutoff, after taking a wrong turn on his final lap. He had run 100 miles through the Tennessee wilderness and missed the finish by the time it takes to draw a breath. That same year, John Kelly became the 15th finisher in race history.
The First Woman
Jasmin Paris of Great Britain sprinted to the yellow gate with just 99 seconds to spare, becoming the first woman in the race's 38-year history to complete all five loops. The achievement made global headlines and was called one of the greatest feats in ultrarunning history.
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Frequently Asked Questions
How long is Barkley Marathons? +
Barkley Marathons is a ~130 miles (209km) ultra marathon with 18,000m of elevation gain. The course is multi-loop on off-trail terrain.
How hard is Barkley Marathons? +
Barkley Marathons is rated legendary with a Challenge Rating of 90/100 (Extreme). The DNF rate is 99%. Runners have 60 hours to finish.
How do I enter Barkley Marathons? +
Entry is by lottery. An application or essay is required. Entry costs $1.60. with a maximum of 40 starters.
What is the weather like at Barkley Marathons? +
Average temperature is 8°C (range -2°C to 15°C) with 75% humidity and a 45% chance of rain. Unpredictable late-winter Appalachian weather. Temperatures can swing from below freezing at night to warm during the day. Rain, sleet, and fog are common. Snow is possible.
Are crew and pacers allowed at Barkley Marathons? +
No crew access is permitted. Pacers are not allowed. Mandatory gear is required. Self-navigation is required.
What is the course record for Barkley Marathons? +
The men's course record is 52:03:00 set by Brett Maune in 2012. The women's course record is 59:58:21 set by Jasmin Paris in 2024.
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