Sunbeam Hot Springs is located in Custer County, Idaho, alongside the Salmon River. Its thermal waters, at 43°C, are available in an indoor or outdoor bath, with a sauna and massage area.
Insider tip — Sunbeam Hot Springs — a beloved free roadside geothermal spring on the Salmon River, 12 miles northeast of Stanley, Idaho. Source temperature 160–180°F (71–82°C), cooled to soakable 100–110°F by mixing with the crystal-clear Salmon River. Rock pools and metal tubs right on the riverbank. In the Sawtooth National Recreation Area. One of Idaho's most popular and accessible hot springs — best visited on weekdays.