UML's Kayak Center offers an upstream shuttle, where you can rent boats and we will shuttle your group upriver to the River Front Park in Tyngsboro (just above the Tyngsboro Bridge) where you can then enjoy a scenic and leisurely paddle downstream. This trip is about five miles, and generally takes about 2-3 hours of paddling, or longer, 4+ hours, if you choose to paddle upstream first. Registrations are available for single or tandem boats. There is plenty of parking at the Boathouse to leave your car. Open to public and UML.
https://www.uml.edu/campusrecreation/programs/kayak-center/shuttle-services.aspx