Liquid Trails are paddling routes. They have been selected by experienced stand-up paddlers as particularly suitable for SUP. Of course, you can also paddle these trails by kayak. So far, there are seven such trails in Lake Lucerne alone. Other trails have been found in Lake Sempach, Lake Hallwil, Lake Zug, Lake Lauerz, Lake Alpnach, Lake Ägeri, Lake Siehl, Lake Sarnen, Lake Sils, Lake Wägital, Lake Brien and Lake Lunger. SUP is also practiced on rivers. The first official trail is on the Reuss.