Are the routes to the huts marked or maintained?
No, routes are not maintained or marked. Map and compass skills are essential. You can buy detailed topographic maps at local mountain shops, Backwoods Mountain Sports and The Elephants Perch, both in Ketchum, or the SNRA north of town. Please keep in mind that even shorter trips with minimal elevation gains can become very challenging in whiteout conditions or if you have to break trail through fresh snow.