None of the runners were reportedly seriously injured, although some of them were shot and have bruises.
Seeing the video you notice how the cyclist gets too close to the bull: surely the fault of the competition, since it was enough to wait for the bull to move away. The cyclist is called Tony Inderbitzin, and in the video below you can see the accident that occurred to another athlete, always with an attitude that is not the best.
Tony Inderbitzin defended himself by saying that he looked like a cow and did not use the necessary precautions. No serious damage but only severe muscle bruises.