THE ONLY Last Man Standing EVENT IN KANSAS, 66 Participants, sINGLE-TRACK TRAIL

Eternal Damnation backyard ultra – A LAST MAN STANDING EVENT LIKE NO OTHER!


This is a true last man standing event, and it will go on until there is only one runner left; no matter how long it takes! Each lap will be 4.167 miles long, and you will have 1 hour to complete each lap. This race is not only about the last person standing.  It is a great race for someone to test their limits, and attempt go further than they have ever gone.

Unlike all other race formats, this race is not about speed.  This race is about grit and the determination to finish another lap. When you have had enough, and you don’t think you can finish another lap, you are welcome and encouraged to stick around and cheer on the other participants.  Kick your feet up, have a beer (BYOB), and watch the festivities. The race will take place on April 15, 2023 at the beautiful Switchgrass mountain bike trail at Wilson State Park.  The first 3/4 mile of the race will be on pavement to allow runners to spread out.  The remainder of the course is single-track mountain bike trail.

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Eternal Damnation
Race Rules

Big Backyard Last Man Standing Rules

A maximum of 2 crew members will be allowed for each runner. Since this is a mostly self-sustained race, crew members are highly recommended.  Absolutely NO crew interaction outside the start/finish area. To avoid overcrowding the start/finish, please do not bring additional spectators. There will not be hot food prepared.  You and your crew are responsible for your own food, first aid, etc. The start/finish will be the only aid station for the course. You are required to carry everything you will need for each lap. No pacers, no trekking poles, and no dogs allowed for this race. Runners must be 21+ to enter.


  • Loop or out and back
  • Must be 4 miles 880 feet in length
  • Metric equivalent 6.7056 kilometers

Measured to Fit the Entire Starting Field

  • Starting corral stays the same size throughout the event
  • Participants must be in the starting corral at the bell


  • Except for restrooms, competitor may not leave the course until each loop is completed
  • No non-competitors on the course (including eliminated runners)
  • No personal aid during a loop (common aid stations are allowed)
  • Each loop must be completed within an hour to be counted… including the final lap.
  • No artificial aids (including trekking poles)
  • Slower runners must allow passes.


  • Timing of the loops is optional


  • Each loop starts precisely 1 hour after the last
  • Warning must be given 3, 2, and 1 minutes prior to start
  • All competitors must start at the bell (no late starts)


  • The winner is the last person to complete a loop.
  • Although all others would technically be a DNF, that will not be reflected on your Ultrasignup account.  (You will be awarded the distance you accumulate.)
  • Results of each runner in terms of distance covered are to be given.
  • If no runner can complete one more loop than anyone else, there is no winner.

Capping the Race

  • Race must be open ended.
The Goal

An Amazing Trail Experience

Our #1 goal for this race is to create an amazing trail experience where people can come out and find a new personal best. And afterwards, hang out and cheer others on as they attempt to do the same. Whether you hope to get 4.2 miles or 100 miles we want you to come out and join the fun.We will assign each individuals finishing mileage in UltraSignup. A DNF will NOT go on your record, instead it will be the total miles accumulated. We want anyone and everyone to come out and see how many miles they can run on this challenging and beautiful course! Come set a PR! Come run a few laps and join in the party!Welcome to THE ETERNAL DAMNATION BACKYARD!

Last Man Standing

Additional Information

  • What You Get – Everyone will receive a badass race shirt and a custom wooden finisher’s award. Each participant will have a parking area for one vehicle and a 12×12 area close the start/finish to set up a popup or whatever else their crew needs. There will be an electrolyte drink and water provided, but you will need to bring your own cup as this is a cupless race. The award will have the distance you covered burnt in on-site at the conclusion of your race!
  • Registration – Until October 10, 2021 registration is $75. After that it will jump to $95 and eventually to $105 as race date draws near.
  • For Updates – We will announce every time one of the 66 spots is filled, as well as who filled it, on our Facebook page.
  • In the event that someone does earn a spot to the Big Backyard World Championships from our race –  either from an awesome at-large performance, OR a future silver ticket win, we will provide that individual with $500 in travel expenses related to the trip.  For more information, join our facebook group, and check out the Road to Big’s website.

2023 Sponsors