The start for Örebro Backyard Ultra started at 10 o'clock.
And the strategies are many and it takes a lot to last a long time in the competition.
- Some are around 30 minutes lap but they usually do not stay that long.
The most common is to get around each lap in around 45-54 minutes, says competition leader Ola Nordahl.
But how do the participants manage to hold on for so long? And meet a runner who went out a little too fast in the clip