1000 home-work kilometers in 112 days on my new bike. I guess it must be something like this: 365 / 112 days / 52 weeks * 48 working weeks equals exactly 3 x 999 kilometers a year, * (3 / 4 * 20.5) (an estimate of the variable distance to work in the past 20.5 labour years) results in around 46,205 commuting kilometers. Minus the 999 kilometers of the new bike = 45,206 kilometers on my previous bike. That is just over 1 time around the globe.