A-Z OF BARKLEY MARATHONS, THE WORLD’S MOST NOTORIOUS ULTRAMARATHON

Photo credit: David Miller

Barkley Marathons is a sporting event like no other. Staged in Frozen Head State Park, Tennessee, USA, the 100-mile sufferfest sees runners attempt to complete an ultramarathon so tough only 17 people have reached the finish line since 1986.

Each year 40 chosen participants have to self-navigate their way around an unmarked lapped course, tearing pages out of hidden books as they go and returning them to enigmatic race creator & director Gary ‘Lazarus Lake’ Cantrell, otherwise known as ‘Laz’, who stands at a yellow gate waiting.

The course, which can change year-to-year, is kept largely secret, just like the entry process, and the date of the event (usually late-March/early April, with spectators discouraged from attending).

Each of the five laps tends to be 20-plus miles in distance and includes about 12,000ft of brutally-steep, obstacle-laden, muddy mountain ascent through thick woodland.

Only 17 runners – all men – have finished the full five laps within the 60-hour time limit. The last were the trio of Aurelien Sanchez, John Kelly and Karel Sabbe, all in 2023. That was John’s second finish after his first completion in 2017.

Here’s our A-Z of the truly unique Barkley Marathons:

A is for Application – Runners pay a $1.60 application fee to enter. Only 40 make the cut each year.

B is for Brushy – The Brushy Mountain State Penitentiary is the inspiration behind the event. It was from where, in 1977, a notorious assassin escaped, negotiating 12 miles through the unforgiving woodland before being caught 54 hours later. The story goes that Laz mockingly responded: “I could do at least 100 miles.” And so, the Barkley Marathons was born, held on the same ground that the assassin made his failed escape.

C is for Conch – A large sized shell blown by Laz meaning runners have one hour until the race starts. Prior to that, all they know is that the race will start at some point between midnight and noon on race day. As for the race itself, that starts beside the yellow gate when Laz lights a cigarette.

D is for Direction – Runners have to alternate between completing their laps clockwise and anti-clockwise. If a participant gets to lap five, Laz then tells them which direction their final lap must be run.

E is for Essay – The entry process is kept largely secret with little or no details to be found online. One thing any hopeful must do is write an essay to Laz.

F is for Fun Run – Anyone completing three laps (60 miles) within 40 hours is said to have achieved a fun run.

G is for Gary Robbins – In 2017 ultra runner Gary Robbins reached the finish just six seconds after the 60-hour cut-off after taking the wrong route on his last lap. It was the same year that John Kelly became the 15th runner in history to complete all five laps within the time limit.

H is for Help – Each runner can get help from their support team, with crews setting-up beyond the yellow gate. There is no support on the course, except for two unmanned water stations.

I is for iconic – Of all the iconic Barkley Marathons photos, one that most people take every year is the shot of all the vehicle licence plates hung up near the registration area. Every first-timer must bring a plate from home and give it to Laz.



J is for Johnston – Sue Johnston jointly holds the best women’s result at Barkley Marathons. Details found online suggest that several women have completed the fun run since 1986, with the likes of Johnston in 2001, and Bev Abbs in 2013, both doing so inside the 36-hour barrier that allows a runner to start a fourth lap. In 2023, Jasmin Paris became the second woman – after Johnston – to head out onto a fourth loop. She was ultimately timed out on loop 4.

K is for Keith Dunn – In keeping with its secretive approach, Barkley Marathons has no official social media channels. The best source for updates is @keithdunn on Twitter. @rat_jaw is also worth following.

L is for Laz – The main man. Gary ‘Lazarus Lake’ Cantrell. Laz also directs Big’s Backyard Ultra (the original backyard ultra) and Barkley Fall Classic. In 2018, he walked 3,200 miles across the US, from the Atlantic to the Pacific.



M is for Movie – The Barkley Marathons: The Race That Eats Its Young is a 2014 Netflix documentary that made the event world famous. A number of other popular films have followed, including our own Last Women Standing: Barkley Marathons 2019.

N is for Number-one bib – Each year Laz picks one participant who he deems least likely to finish the first lap and gives them bib number one to wear.

O is for Obstacles – Staged amid thick woodland, the obstacle-laden terrain can make for slow progress, with strewn trees and a nasty, sharp vegetation that can leaves runners with shredded legs.

P is for Pages – Runners must navigate their way to set locations and find books placed out on the course by Laz. They must tear the page out of each book that corresponds to their bib number and return them to Laz at the end of the lap.

Q is for Quit – When a participant quits and drops out, a bugler plays ‘Taps’ upon their return to the yellow gate.

R is for Rat Jaw – The name of the toughest hill on the course. A brutal beast, whether going up it or down it!

S is for Secrets – Despite all the media exposure, Barkley Marathons retains many secrets and Laz likes to change things up to keep people guessing. Participants are asked not to tell anyone that year’s date of the race.

T is for Time – The time limit is 60 hours. Not a second more. Just ask Gary Robbins.

U is for Unmarked – Self-navigation is the name of the game. No flags, tape, signage or ribbon to guide runners here. The course is unmarked.

V is for Virgins & Veterans – The names given Barkley Marathons first-timers and those that are returning for more hurt. Virgins will often try and find a Veteran to help them, especially on lap one.

W is for Watches – Runners have to wave goodbye to their fancy GPS watches, which are banned. Nicky Spinks said after the 2019 event in which she and Stephanie Case were the last women standing: “We returned to camp in the early hours, though I’m not sure when exactly as the watches Laz made us all wear didn’t tell the proper time!”

X is for X-ray vision – Would be useful when navigating through thick woodland at night! A top-notch headtorch is a participants next best bet.

Y is for Yellow gate – The iconic start and finish point for each lap. Show an ultra runner a simple photo of this yellow gate and they’ll know exactly what it means.



Z is for Zzzzz – Runners can find pre-race sleep hard to come by, knowing that the conch could be blown at any time. Just another reason why this notorious ultramarathon is regarded as the world’s toughest.

*Check out our range of ultramarathon shoes, running clothes and running packs. For Barkley Marathons, many runners wear shoes with aggressive outsoles – like the MUDTALON – that grip tight over off-trail terrain.



*Photos by David Miller.

*Related Links:2023 Barkley Marathons Round-Up| 2023 Barkley Marathons Photo Diary| Last Woman Standing: Barkley Marathons 2019 - Nicky Spinks Film