24 Hours of Booty announced that volunteer registration is now open for the Seventh Annual 24 Hours of Booty Columbia, a charity cycling event to raise funds to fight cancer. Riders will roll on the Columbia Gateway Business Park loop from 2 p.m. on Aug. 23 to 2 p.m. on Aug. 24. About 170 volunteers are needed in the following areas: packet pick-up, pre-event course preparation and maintenance, course marking/signage, food and beverage, campground management, hospitality, and parking and traffic control. Volunteers may sign up as individuals or in groups. To register, go to www.24hoursofbooty.org and click on the volunteer tab. For questions, call 877-365-4417.