Mill River General Store Retail (Specialty Foods) Visit Website Request Info 10 Great Barrington Mill River Road Mill River, MA 01244 (413) 229-2663 Instagram Hours: Winter Hours: 8 a.m. - 6 p.m. Summer Hours: 8 a.m. - 7 p.m. About Map About Neighborhood grocer specializing in responsibly grown food and household provisions. What's Nearby? Distance: 5 10 15 20 25 50 mi.