The miles you can cover in 1 hour on a bicycle will be determined on the MPH you ride the bicycle.
Most average people ride their bikes at a speed of 14 MPH so it would take you one hour to cover 1 mile on a bicycle ride.
So to ride 14 miles you would get to the destination in roughly 1 hour and if you ride for 2 hours you should cover a little over 30 miles in that time on a bicycle ride.