CambridgeSide Galleria 100 CambridgeSide Place Cambridge MA 02141 Events Halloween Party at CambridgeSide Mark your calendar for Halloween Happenings at CambridgeSide on Wednesday, October 30, 2024, from 5:00 p.m. to 7:00 p.m. and double your Halloween fun! Wednesday Oct 30, 2024 Cambridge Half Marathon + 5K at CambridgeSide Sunday Nov 3, 2024 Share × Print Email Facebook Twitter LinkedIn Tell a Friend ×