I ran for 12 mins non-stop at lunchtime and I was very chuffed. Mainly because my wife, who is very out of shape, and my eldest daughter (6yo) did it with me, in the Sport Relief mile, so well done them. I was also somewhat hindered by having to carry a camelback with more food and spare clothes in it than I'd take on a 5 hour ride, and having a mardy 3yo on my shoulders too.
Somewhat ironically, shortly after we'd finished and my jockey had finished her celebratory ice cream she was overwhelmed with a sudden rush of energy and ran most of the way back to the car park at a pace that shamed most of the other runners. Can't win with kids.