The UML 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. Highlights include paddling under the Tyngsboro and Rourke Bridges, the narrows around Tyngs Island, and side trips under the railroad bridges and up Stony Brook to explore historic mill buildings.