2021 Winnetka-Northfield Sidewalk SaleAn open air shopping and services spree in Winnetka and Northfield! Winnetka: 9 a.m. – 5 p.m. Friday, July 16 & Saturday, July 17 Northfield 10 a.m. – 5 p.m. Wednesday, July 14 - Saturday, July 17 Click here for the 2021 Sidewalk Sale Application!