Photos: Age Groupers Take On Ironman Arizona

The 2.4-mile swim takes place in Tempe Town Lake.

An athlete gets body marked before the race.

Athletes traveled from all over the world to participate in the event.

The calm before the storm.

Over 2,500 athletes participated in this year's Ironman Arizona.

Challenged athlete Sarah Reinertsen takes on another Ironman.

With 2,500 athletes sharing a three-lap course, things got crowded quickly.

Challenged athlete Ricky James.

An athlete stops at an aid station on the Beeline Highway.

One of the scenic stretches of the Ironman Arizona bike course.

A very crowded Beeline Highway.

After three laps on the bike, athletes take on three laps around Tempe Town Lake.

There were a few interesting costume choices on the marathon course.

The relatively new pedestrian bridge at Tempe Town Lake is showcased in the background of this photo.

A busy scene in Tempe.

"You are an Ironman." The official Ironman Arizona finishers' medal.