Expect to be a little over any hour depending on how much traffic you have. 50 mins with little traffic. 65-70 mins with alot of traffic. I usually figure around 15 miles per hour.
I presume you mean push bike i.e. bicycle and not motor bike. Depends on how fit you are, how light your bicycle is and how busy the traffic is. When I was 18 I used to count on doing about 10-15 miles per hour on rolling country lanes with a pretty heavy touring bicycle - but could keep them up pretty much all day.
