The next start line / 29 May 2027
4.167 miles.
Every hour.
PWR Endure Ultra 2027 at Tockington Manor, Bristol. Up to 30 hourly loops, followed by a fastest-lap finish on loop 31 if runners remain.
The race mechanism
The bell waits
for nobody.
Finish a loop within the hour and use the remaining time to recover. Be back on the start line for the next hour. The same rules apply to every runner.
- Start together, every hour.A new 4.167-mile loop begins on the hour. Be inside the starting corral when the bell goes. Late starts are not permitted.
- Finish inside the hour.The time left is yours to recover. Miss the hourly cut-off or the next start and your race ends.
- Go again, up to 30 loops.That’s 125.01 miles across the first 30 loops. You choose how many starts you can answer.
- One last lap, if needed.If runners remain after loop 30, the fastest lap on loop 31 decides the winner.
Picture your challenge
How far
could you go?
You don’t have to aim for 30 loops. Choose a target below to see the distance and timings.
A distance illustration, not a training plan or a prediction of your performance.
Each loop adds 4.167 miles. Every new hour is another chance to keep going.
The altered Backyard Ultra
One hour.
Your next start.
Run 4.167 miles and start again on the hour. Try the demo, choose a loop time and see how much recovery time it leaves.
From the first whistle to lap 31.
Illustrative field and timings. Not live race data.
Choose your time. Race timing and recovery update across all three views. Every new loop still starts on the hour.
Select a lap block to see its time and distance.
Saturday 10:50 BST / 10 min to your next start at 11:00
Start calmly. This is your race.One loop. A fresh start.
Finish the first loop, use your recovery window, and return for the next hourly start.
Drag the timeline or choose a moment. Playback takes around 90 seconds, with more time at the key moments. Pause or select a lap whenever you like.
Make every minute of your hour count.
RUN 50 MIN + RECOVER 10 MIN = 1 HOUR
Move the slider or try an example to see your recovery window. Play to see the hourly reset.
Illustrative times, not pace targets. Your recovery window includes refuelling, kit changes and getting back to the line.
Choose your loop goal.
Each loop starts on the hour. Targets show elapsed time to your final loop finish, including the recovery windows between starts. Change your pace to update every target. An illustration, not a prediction.
Your hour: run, recover, return to the line. Adjust 30–59 minutes by dragging or using the arrow keys.
Click a loop to set your target and see its tip.
Loop 6 / 15:00 Saturday start
Six loops. Check how you feel before choosing another start.
4.167 miles per loop. A new start on the hour.
Your base for the weekend
Tockington
Manor.
- WhenSaturday 29 May 2027
Start: 10:00 BST - WhereWashingpool Hill Road, Tockington
Bristol, BS32 4NY - PreparePlan for a self-supported race. Bring the food, hydration, kit and crew support you need.
The final 2027 briefing will confirm arrival times, facilities, mandatory kit and the course.
Open the location in MapsBefore you line up
Frequently asked questions.
What is a backyard ultra?
A race where runners complete the same loop every hour. The field continues until only one runner remains.
Is this suitable for first-time ultra runners?
Backyard ultras can be approachable because the structure is simple, but the mental and physical demand is serious. Train properly and come prepared.
Can sponsors or local brands get involved?
Yes. Explore our partners or talk to the PWR team about supporting the event.
Do I have to run all 30 loops?
No. Whether your day is three loops or thirty, you are welcome. Run within your preparation and make sensible decisions throughout the event.
What makes this an altered Backyard Ultra?
The 2027 event uses a 4.167-mile hourly loop, capped at 30 loops. If runners remain, loop 31 becomes a fastest-lap finish. This differs from an uncapped last-person-standing race.
What should I bring?
Plan your food, hydration, clothing, lighting and recovery setup for a self-supported race. The organiser’s final 2027 briefing will confirm mandatory kit and available facilities. Do not rely on provisions from an earlier event.
Can my crew come with me?
Crew and community are part of the PWR experience. The final briefing will confirm access and base-camp arrangements. Ask the team
Where do I find entry and refund details?
Explore the entry page for current availability. Contact the organiser with questions about entry conditions and refund policies before booking.
PWR Endure Ultra / 29 May 2027