Adrianne Haslet-Davis never thought about becoming a runner — until she lost a leg in the Boston Marathon bombing three years ago. Today, the professional ballroom dancer becomes the first victim of the terrorist attack to return to scene as a runner in the iconic race.

Haslet-Davis was a spectator near the finish line in 2013 when the explosion tore her left leg so severely that doctors had to amputate it.

She spent nearly three years in rehabilitation so she could return to the stage as a dancer, and along the way, decided to be at the finish line again this year — as a runner.

Her endeavor will raise money for the Limbs for Life Foundation, and she also wants to honor those who died or were wounded in the attack.

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Haslet-Davis's training hasn't been solely physical. She realizes that crossing the finish line will require her to break a powerfully emotional barrier.

"I hope I have enough hydration to cry and run at the same time," she told WCVB News.

(WATCH the video below from WCVB News) — Photo: WCVB video

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