The 30-Day Backyard Ultra
Run one backyard ultra loop, 6.71km (4.17 miles), every day for 30 days. Every day you finish earns a ticket.
Once it's installed, find The 30-Day Backyard Ultra in the Challenges feed.
One loop a day. Thirty days.
Every day for 30 days, run at least 6.71km (4.17 miles), the length of one backyard ultra loop, and log it in the Harry's app.
Every completed day earns a ticket into Harry's monthly prize draw, so the more days you run, the more you earn. Finish all 30 and you unlock the limited-edition Phil Gore badge. Treadmill runs count.
Every loop earns a ticket.
Each day you complete earns a ticket into Harry's monthly prize draw, so the full 30 days is 30 tickets. The top five on the leaderboard earn bonus tickets on top.
Finish all 30 days to unlock the limited-edition Phil Gore badge. Bonus tickets land when the challenge closes.
Short of the loop? No ticket.
Log one run a day in the Harry's app between Sun 1 Nov and Mon 30 Nov. Any of these and that day won't count.
Under 6.71km.
Doesn't countNot tracked on a wearable or running app.
Doesn't countDistance or elapsed time missing from the activity.
Doesn't countAn old run from before the window.
Doesn't countNo image proof uploaded.
Doesn't countTracking & Submission
- Wearable or running app: COROS, Garmin, Apple Watch, Strava, etc.
- Treadmill runs are allowed, as long as distance and elapsed time show in the activity.
- Upload an image of your run as proof. Connect your wearable in the app's Settings and your runs sync automatically, so you won't need a Strava link.
- Issues? ethan@hardcoreharrys.com.au
How To Enter
The 30-Day Backyard Ultra is free to enter with the Harry's app. Download it free and join from the Challenges feed.
Enter in app Already in the app? Open The 30-Day Backyard UltraShow full disclaimer
Participation is voluntary and at your own risk.
You confirm you are in good physical health and assume all liability for any injuries. Hardcore Harry's AU PTY LTD reserves the right to disqualify any entry that violates submission rules. Repeated violations may lead to removal from the challenge.What is a backyard ultra?
A backyard ultra is a last one standing race created by Gary "Lazarus Lake" Cantrell, whose Big's Backyard Ultra in Tennessee made the format famous. Runners complete a loop of 4.167 miles (6.7km) inside every hour, then start the next one on the hour, every hour.
The loop is short enough that anyone can run it once. What makes it brutal is that you never stop: 24 loops is 100 miles, and the race only ends when one runner finishes a lap that nobody else can. Everyone else is out.
Harry's King of the Hill in Pyalong uses the same hourly format on a 4.2km hill lap. The challenges in the app bring the idea home, so you can run the loop wherever you are and log it in the Harry's app.
- Yard
- One loop of 4.167 miles (6.7km), started on the hour.
- 100 miles
- What 24 yards adds up to, a full day and night of running.
- Assist
- The runner-up, the last person to drop before the winner. Every other runner is a DNF.
From download to the draw.
- 1
Download Harry's
Free on the App Store and Google Play.
- 2
Join the challenge
Find The 30-Day Backyard Ultra in the Challenges feed and tap join. It's free to enter.
- 3
Do it. Prove it.
Track it with your watch or a running app, then log it in the Harry's app with a screenshot or your Strava link.
- 4
Climb the board
Every entry goes on the leaderboard, and earns your shot at the prizes.
The 30-Day Backyard Ultra challenge, explained.
Thirty Loops. You In?
The 30-Day Backyard Ultra is on from Sunday 1 November 2026 to Monday 30 November 2026, so download Harry's and get your first loop in.