BUTTE, Mont. -

Mariah's Challenge founder Leo McCarthy is back in Butte.

NBC Montana met up with McCarthy Friday to talk about being nominated as a CNN Hero, and what he took away from the once-in-a-lifetime experience.

McCarthy told us how important it was being able to share the story of Mariah's Challenge and the program's purpose with the world.

He talked about meeting and learning from the nine other finalists for Hero of the Year, and the inspiration he gained from them and what it will bring to Mariah’s Challenge in the future.

"The main ingredient with all nine people is they believed in humanity; they believed we can all make this place a better place when we leave...that's what I got from them," McCarthy added.

McCarthy didn’t take home the top prize of $250,000, but as finalist McCarthy did get $50,000 to help Mariah's Challenge.

The organization challenges teens to stay sober and never ride with someone who has been drinking.

McCarthy founded Mariah’s Challenge after his daughter was killed by a drunk driver in 2007.