Welcome to Brunei Backyard Ultra
2nd Edition


​Backyard ultra is a form of ultramarathon race where competitors must consecutively run a distance of 6706 meters (4.167 miles) in less than one hour. Any remaining time you have within the hour once the lap is complete is usually used to rest and refuel.

This race is well known for its strict rules;

No Late Start.
Each loop starts precisely one hour.
If you are not at the starting line at that hour, you are counted as withdrawing.
Do not leave the course until every loop is completed.
No non-participants, personal aid (support crew) or artificial aid such as trekking poles on the course.
The winner is the last person to complete a loop. All others are technically DNF. If no runner can complete one more loop than anyone else, there is no winner.

Challenge accepted?