London Backyard Ultra

The concept is simple.

Participants must run 4 miles (6.7KM), on the hour, every hour, until there is one runner standing.

Each lap starts on the hour and must be completed in less than 60 minutes.

When each lap is completed, the remaining time within the hour is typically used to recover for the next lap.

Participants complete hourly laps until there is only one runner still going.

It is this runner who is crowned the one and only London Backyard Ultra winner!