Entertainment includes music by Virginia bluesman Jimmy Cole and his band, and local musicians Blackwater, Justin Ryan, and Alan Girard and His Traveling Band. Plus 12-year-old guitar prodigy Evan Button. Elvis is also expected to make an appearance! Beer (including Evolution, Shock Top, Peroni, Dogfish Head, and more) and delicious barbeque available. Another not-to-be-missed event: the Main Street Mile. This wacky race WILL make you laugh. Each four-person team takes on the terrifying Tricycle Tumble, the suspenseful Snorkel Sprint, and the extraordinary Egg Walk. Race starts at 6 pm.

5 – 10 p.m. Rain or shine, 400 blocks of Poplar and Race Streets, downtown Cambridge. www.cambridgemainstreet.com

Saturday, September 18th