About 400 women particpated in the inaugural Athleta Iron Girl Lake Zurich on Sunday, which included a run, bike and swim. | Cynthia Wolf~For Sun-Times Media

Competitors in the inaugural Athleta Iron Girl Lake Zurich listen to the National Anthem before starting the race Sunday. | Cynthia Wolf~For Sun-Times Media

A woman begins the 3-mile run portion of the Athleta Iron Girl sprint triathlon Sunday in Lake Zurich. | Cynthia Wolf~For Sun-Times Media

After being the first to cross the finish line at the Iron Girl Lake Zurich, clinching first in her age division, Lindsay Zucco of Elburn (left) receives a hug from fellow "Tri-Mom" author Debra Hodgett of West Chicago. | Cynthia Wolf~For Sun-Times Media

Lindsay Zucco of Elburn receives a medal at the finish line of the Iron Girl Lake Zurich on Sunday. | Cynthia Wolf~For Sun-Times Media

About 400 participants took on the inaugural Athleta Iron Girl in Lake Zurich, which started with the bike portion of the sprint triathlon Sunday. | Cynthia Wolf~For Sun-Times Media

Kildeer native Stephanie Skladzien readies her bicycle before the start of the Athleta Iron Girl in Lake Zurich Sunday. | Cynthia Wolf~For Sun-Times Media

Allison Zimmerman, left, of Libertyville, and new friend Colleen Cox of River Forest are all smiles before heading into Lake Zurich for the swim portion of the Athleta Iron Girl Sunday. | Cynthia Wolf~For Sun-Times Media

Participants and spectators are silhouetted against the sun before the start of the Athleta Iron Girl triathlon in Lake Zurich Sunday. | Cynthia Wolf~For Sun-Times Media