Kristin Armstrong, the Olympic gold medalist in the women's individual time trial in road cycling, took a GPS unit along with her when she previewed the road course in Beijing in December 2007. When she got home to Idaho, she d/led the data, put it into Google Earth, and found a similar local loop on which to train.
This capability along with having the elevation profile proved invaluable in my preparation for my Gold Medal race.
(via matt's a.whole)
