I spent the Sunday photographing The Redbull Timelaps which is a 25hr cycle race. 25 hours because this was the night the clocks went back. I really admire the riders, support crews ad organizers as it was really cold with several periods of rain during the race. It's raced in teams of 4 so you have turns out on track. It's a horrible yet strangely challenging thought to have to cycle for a couple of hours then get cold and stiff and then have to go out again.
There are loads more here