In the NBA, a quarter is 12 minutes long.
Soccer is usually played around 3-4 hours because they have to practice hard for their games. I know a pro soccer player and that's how long they practice.
about 100 meters or less
pro soccer players
It can vary from 2 minutes to 15 minutes. @ minutes for a house soccer game. 5 minutes for a travel soccer game. 10-15 minutes for pro/semi-pro soccer games.
My guess is that you play pro soccer the same way as you play youth soccer or travel soccer.
2-5 hours on average.
You can be as young as 15 to join a pro soccer team
You can be a pro soccer player as long as you are good, fit and playing well. Most players retire in their thirties when they find younger players, just a little bit faster, are taking their jobs.
Long hours of practice and traveling a lot
It doesn't matter as long as you got skills