Because it is a sport you could ask the same about running... Why did running come into the olympics? Because it is a sport!
i think it came from GREECE
It can.
basketball
Trail Running is comparable with Cross Country Running. The one exception is that Trail Running is done on longer routes. Trail Running is running and hiking over trails. It is considered to be a running sport.
running is the best sport because it used in baseball soccer football and many more
Lacrosse is the fastest sport on two feet.
Road running is a sport. The runner is the person who does the participating.
Running is a physical activity.
Running races
running
you run