The New England Green River Marathon is as scenic as it is fast. Running along the mostly wooded banks of the Green River, from Marlboro College in Vermont to Greenfield Community College in Massachusetts, the downhill course features a net 1,450-foot drop. This race will raise funds for the Connecticut River Conservancy’s efforts to preserve and improve the Green River, one of the many tributaries that flow into the Connecticut River, and also will support the Sugarloaf Mountain Athletic Club’s activities in the Pioneer Valley.