It is getting harder and harder to find places for them to run and play too.
The schools in our town of 65 thousand have vast areas around them. We had baseball backstops, basketball courts and a regular marked trail for running laps.
And YES, running a lap could be a punishment, lol, and no one got sued over it. This was in the mid 80's so times have changed but our schools still have all that land.
We used to have the Presidential Physical Fitness Awards twice a year. They were very hard and each child was actually judged with a score on how they did in each thing!
Horror of horrors, most of the kids really enjoyed it and tried hard to do well.