Promoting Stand Up Paddling in the Champlain Valley of Vermont Experience the fun and freedom of Stand Up Paddleboarding -- SUP -- on the Northeast's premier mountain lake. What's better than taking in the spectacular Lake Champlain sunsets, gliding past lush and colorful shoreline, enjoying Green Mountain and Adirondack vistas, all while taking part in a growing new sport rooted in the Hawaiian spirit of Aloha.