Originally Posted by LittleTinGoddess
With all the running the players do on the court, I'm guessing their legs and heart are in good enough shape to do the times I mentioned if they're also lightweight enough. Nadal would probably be too bulky to pull it off.
Ferrer is remarkably fit, so I don't doubt he'd be a decent 5k runner. I'm not a distance runner, so I don't know what a really good time is.
I know Ferrer runs, because I saw him and Lopez jogging once as I pulled into the big grass parking area behind the stadium at Indian Wells. But he certainly just seemed to be doing a little exercise and wasn't doing a 5 minute pace mile.
I believe we can say with certainty that most professional tennis players would do better in the 5k than most amateur athletes. Even if they don't run distance, there's a lot of cardio developed during the daily tennis practices.