Is it better to do 10 to 15 miles each day, or 20 to 30 miles every other day? One thing I have just found out is that I don't have to be trying 110% ALL THE TIME. I think this is a lot of the reason why I end up pushing the bike up longer hills...just all or nothing, rather than gently does it. The last 2 rides I have taken it a LITTLE easier, and found my average speed has increased by 2mph as a result, ie. cycling up hills VERY slowly is still faster than walking.