Friday, Apr 1, 2022 @ 10:00 AM
This Event Took Place Fri. Apr 1, 2022

Cancelled Event



The 3rd annual Big Hill Bonk - Wisconsin’s Backyard Ultra is going to take place during its original time of year.

Inspired by the Barkley Marathons’ creator, Gary Cantrell, aka Lazarus Lake, who started the original Big Dog’s Backyard Ultra, more races of this format have been popping up around the world. This is one of them.

It truly is a simple concept. It’s a “Last Person Standing Race”. Meaning in the end, just one runner will finish the race.

At 1000 hours on Friday morning, March 31st, we will start a race at the Welty Environmental Center in Beloit Wisconsin’s Big Hill Park and run a 4.166 mile loop. Runners will have just one hour to complete this loop.

Again at 1100 hours, we will begin another loop around the same 4.166 mile course.
The same will be done at 1200, 1300, 1400, and so on, every hour.

Runners must be standing in the starting corral when the next loop starts or else they will not be able to continue.
Runners will also not continue if they choose not to themselves.
There will be no late starts once the bell is rung.
Loops will continue until only one runner remains, and at that point, once that person completes a loop on their own, that runner is the winner.
All other runners are a DNF.

It is important to note there MUST be one person to finish a loop in the hour given. For example: If two runners are left and they both finish a loop in the time given and then one runner drops, the other runner still must complete another loop in the time given. If that last runner does not finish the last loop in the hour given, he will have “DNF” and there will be no finishers.

At 3 minutes till each loop 3 whistles will be blown.
At 2 minutes till each loop 2 whistles will be blown.
At 1 minute till each loop 1 whistle will be blown.
A bell is rung to signal the start of each loop.

Once the bell is rung, runners may not visit their crew, their tent, their vehicle or receive aid from anyone.
Runners must stay on the course once the bell is rung.
The only reason for leaving the course once the bell is rung is to use the porta-potty.
Once you finish your loop you may choose to do what you want, but must be back in the starting corral before the bell rings.

Runners will need to provide their own aid.
There will be a space next to the start and finish line to set up a chair, cooler, and other small personal items.
An area will be close by where you may set up a tent.
Any runner that DNF’s must immediately vacate their spot close to the finish line to allow surviving runners to move closer. DNF runners are welcome to continue spectating the Wisconsin’s Backyard Ultra.
Porta-potties will be located approx. 100yds from the starting corral.

An aid station will be set up near the starting corral serving the traditional spread.
A fire ring to will continue to burn a fire. This is your trap.
Alcohol is not permitted (Sorry…It’s a city owned park which prohibits alcohol)
Water is provided.
Coffee is provided.

Wisconsin’s Backyard Ultra

Date: Friday, March 31, 2023
Time: 10:00 AM and every hour thereafter
Location: Big Hill Community Park, Beloit, WI (1201 W Big Hill Rd, Beloit, WI 53511)

The cap is 100 runners


If there is a Last Person Standing, they will receive $2.00 per mile completed as a reward as well as automatic entry into the following years race (if they choose so).
All other runners are considered a "Did Not Finish" (DNF) and will not receive an award.
All registered runners will receive a custom thermos travel mug.

Refund Policy

There is absolutely no refunds under any circumstances. So please consider this closely before you register.


Photography - (drone footage also desired)
Aid Stations
Course Marshals/ Traffic control
Packet pick up (The evening of Thursday March 31st)
Post race clean up and course cleanup
Parking Official

Event's current local time: 2:05 AM CT


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