4 miles is not much on a bike if you have a safe bike way. If you need to do it on the street with cars it's a different story. It's less than 30 minutes ride f

4 miles is not much on a bike if you have a safe bike way. If you need to do it on the street with cars it's a different story. It's less than 30 minutes ride for the average cyclist. (assuming it's pretty flat)