Such generalisation! Good luck from finding a number that is all challenge to all people. If it's not a challenge simply don't sign up.
yes but if you do manage to ride 130 this month, you could ride 140 next month and 150 the one after that and 160 the one after that, is the point not to inspire, motivate and challenge you to push yourself?
yes but if you do manage to ride 130 this month, you could ride 140 next month and 150 the one after that and 160 the one after that, is the point not to inspire, motivate and challenge you to push yourself?