Rep. Kyrsten Sinema is poised to become the first member of Congress to compete in an Ironman triathlon.

The Arizona Democrat will tough it out in Ironman Arizona in her district later this month.

The 37-year-old congresswoman — an avid marathoner who we hear rides bikes, runs and swims in the very early mornings — dubbed the race “one of the most exciting challenges I’ve ever faced,” in a statement to ITK from her office.

“The Ironman competition represents what I admire most about the American spirit — hard work, determination, and a commitment to overcoming challenges,” she said.

An Ironman isn’t for workout wimps — it includes a 2.4-mile swim and a 112-mile bike ride, followed by a full 26.2-mile marathon. 

Sinema will be running on behalf of the Desert States Charitable Foundation.