Sure it is unofficial, but I finished my 600km ride on Sunday with hours to spare and many miles left in my legs. I'm feeling really good about going to Paris this summer. 69,645 feet of climbing over the 4 rides, that's pretty good, yes that is over 13 miles vertically. The last ride alone was over 27,000ft, that is almost like riding up Mt. Everest. Sorry to sound so boastful but the endorphins are still strong in my system.