Athletes are stepping up in the fight against cancer.
CoreFitness kicked off its inaugural 24-hour stair-climbing marathon on the steps of the Philadelphia Museum of Art Thursday.
The event raises funds for Legacy of Hope, a nonprofit organization that funds cancer research and supports local cancer patients.
Action News photographer Chuck Purnell decided to join them, taking a run up the steps, as well.
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CoreFitness holds 24-hour stair climb at Philadelphia Art Museum for cancer research