Baltimore Police Commissioner Kevin Davis will be trying to catch as many people as he can at Saturday's Baltimore 10 Miler.
But not because they're in trouble with the law.
Davis is going undercover at the 10 miler, starting behind everyone else and nabbing runners who "flee and elude."
"It's going to be a really fun event. I'm looking forward to it. I'm hoping the adrenaline will kind of make me faster than I normally am," Davis said. "Every person I run past will have a sticker that reads 'Caught by the Commish' slapped on their back."
Each sticker is worth a $4 donation to the Signal 13 Foundation.
"They tally up how many people I run past... which is hopefully going to be a lot!" Davis said.
Signal 13 - named for the radio alert given when an officer is in danger - provides financial assistance to Baltimore officers and their families during tough times.
"When they have some sort of tragedy in the line of duty. It might be some other challenge that they're having in their life. They need to know that the Signal 13 has got their back," said Lee Corrigan, president of Corrigan Sports Enterprises.
Last year, race organizer Corrigan wrote a $12,000 check.
Corrigan says Davis will be looking for even more in his first 10 miler as commissioner.
The commissioner won't be the only one catching runners either.
He'll get help from a team of five officers running right alongside him.
Follow Brendan McNamara on Twitter @BrendanABC2.