North York General Hospital’s Underwear Affair fundraising event will take place Saturday at Woodbine Park, at the northeast corner of Lakeshore and Coxwell.

A five-kilometre walk and 10-kilometre run will be held. Hundreds of people of all ages and athletic abilities will participate, dressed in everything from briefs and boy-shorts to T-shirts and track suits to raise funds and awareness for cancers below the waist. The Underwear Affair is presented by Mark’s Work Wearhouse.

Things get going Saturday with a costume contest at 5 p.m., followed by the start of the run and walk at 6 p.m.

An afterparty will be held from 7 to 10 p.m.