Every year, a German company called 'Sportograf' make the trip out to photograph the Scott 24 Hour race. They do an awesome job - this year they ended up with 85,000 photos, all indexed by rider number, which you can then purchase quite cheaply. $35 got me over 30 professional quality photos.
A selection of this years snaps are in the slideshow below. They're good - makes an ordinary rider like me seem a little less ordinary!