He calls it Team Pursuit and they're riding bicycles across the country to raise money and awareness for adults with intellectual and developmental disabilities.
The group was in Rapid City Wednesday with what they're calling a "fun run" between Mount Rushmore and Rapid City.
That group rolled into town Wednesday afternoon.
David Baldwin of Houston organized the ride, and he's riding the entire 3,500 miles from Astoria, Oregon to the East Coast, with others doing smaller segments of the trip.
The ultimate goal is to raise $13 million dollars for The Center in Houston.
David Baldwin says, "We've got over 350 friends join our mission. We'll have over 100 people from Houston riding along with us. And then in the cities we go through, we'll have hundreds of additional riders join us. So it's a really fun project and the dream trip of a lifetime for me and Maire.
The Center is similar to Black Hills Works here in the Black Hills.
The full group takes off Thursday morning for a ride to Wall and back to see the Badlands.