Axel Vang Christensen was in the lead when he fell over an obstacle and ended up lying on the track.
Last in the tight bunch ran Nahuel Carabaña.
He passed the Dane but when he saw what had happened he turned around and tried to help him up.
However, Vang Christensen was in too much pain to stand up and Carabaña instead tried to help him off the track.
The Andorran lost a lot of time and came last in the race and thus misses the final.
However, he ran to the finish line to a standing ovation.