Patrick Dempsey, second from right, is joined by his family, friends professional riders, supporters and community members as the first wave of bicyclists take to the streets in Lewiston at the start of the 2014 Dempsey Challenge bike ride. The challenge is a fundraiser for cancer research and care that is in its sixth year.

Four-time National Road Race Champion and a four-time Tour de Georgia stage winner Freddie Rodriguez participated in this years event. Rodriguez rides for Jelly Belly. His nickname, Fast Freddie, is due to his reputation as a sprint specialist.

Fans and cyclists turned out for the Dempsey Challenge in Lewiston over the weekend. The actor founded the Dempsey Challenge following the experience of his 77-year-old mother’s battles with ovarian cancer. She passed away in March.

Runners from the 5K and 10K races cross the finish line during The Dempsey Challenge in Lewiston.

A young participant gets ready to ride. Nearly 3,900 people helped raise more than $1.1 million for cancer care and support at the 6th annual Dempsey Challenge, organized by actor Patrick Dempsey in honor of his mother.

Patrick Dempsey takes a photo with a young participant in the Dempsey Challenge.

Neil Bement of Lewiston gets a high five from the crowd as he makes his way into Simard Payne Memorial Park Saturday during the Cancer Survivor Walk during the Dempsey Challenge.

Patrick Dempsey rides into the finish line along with pro rider Freddy Rodriguez.