Thanks trickywoos, but as a game it's a bit pants. I counted 0-100 times of about 12 secs & at least 7 or 8 secs to stop again, plus I was getting 10 min laps even though I must have crashed at least 20 times. I hope I can control a real bike better than I can control a computer game
I know I could never learn 13 miles like the back of my hand, but I think I've achieved what I wanted - a rough idea of what to expect.