The day before the Ironman World Championship just under 2,500 athletes check their bikes in to transition. A look at some of their rides.

The night before the big day, some speedy looking rides are set up in transition for Challenge Roth.

The women pros pulled out all the stops on the super-fast bike course in Samorin for the Challenge Championship. A look at some of the riders and their bikes.

Extensive test and fine tuning his bike position netted Andreas Böcherer a 30 watt performance boost. Here's how they found that extra speed.

More than 2,000 athletes have racked their bikes in preparation for the Ironman World Championship. Photos from T1.

Some of the fast rides set up in transition at the ITU Long Distance World Championship in Penticton, B.C., Canada.