The challenge is to ride 20% of each Tour de France stage. The rules are very simple...you MUST ride the minimum miles in 1 ride on that day (you can do more miles if you wish). The idea is to challenge you to be more consistent with your riding. You are NOT allowed to skip a couple days and then "make-up" the miles.
All finishers will get a custom finisher medal. Please note this is for fun and not a race, if you are very ill and/or injured you should REST!