Rob Greenfield is biking from San Francisco to Vermont to raise money for charity, and you can join him for 100 miles from Milwaukee to Chicago.

Riders will meet at 9 a.m. June 15 at Bradford Beach, 2400 N. Lincoln Memorial Drive in Milwaukee, and start their trek at 10 a.m. Participants will camp overnight and finish their ride at Millennium Park on June 16, and they are invited to continue biking with Greenfield as he makes his way to New York.

The event is free. Proceeds will go toward 1% for the Planet.