Video shared by former "Bachelorette" contestant Zac Clark shows runners pushing through floodwaters as they made their way along the route.
Clark says the challenging conditions didn't slow him down too much.
He still managed to finish third in his age group.
Clark was picked by season 16 "Bachelorette" Taysha Adams and they got engaged, although they later broke up. He's currently linked to another past "Bachelorette," Kaitlyn Bristowe, although neither have confirmed an official romance.
Paramus' Race Faster Half Marathon runners caught in floodwaters