Idaho Rocky Mountain Ranch Hot Spring

## Overview Idaho Rocky Mountain Ranch Hot Spring is a natural geothermal spring located in the heart of Idaho's Sawtooth Valley, near the small community of Stanley. Situated at approximately 44.106°N, 114.849°W, this hot spring is associated with the historic Idaho Rocky Mountain Ranch, a guest ranch that has operated in the area since the 1930s. The ranch itself is listed on the National Register of Historic Places and sits along the Salmon River corridor, surrounded by the stunning peaks of the Sawtooth and White Cloud mountain ranges. The hot spring draws its warmth from the geothermal activity common throughout central Idaho's volcanic and fault-line geology. The Sawtooth Valley is home to numerous natural hot springs, and this one has long been a draw for visitors seeking a soak amid some of the most dramatic mountain scenery in the American West. The spring feeds a pool on the ranch property, offering a rustic and scenic soaking experience with views of the surrounding wilderness. Historically, the natural hot water in this area has been used for bathing and relaxation for generations, and the ranch has incorporated the spring as a key amenity for guests and visitors. Water temperatures at hot springs in this region typically range from around 95°F to over 100°F, though exact temperatures can vary seasonally. ## Directions 1. From Stanley, Idaho, head south on **Highway 75** (Sawtooth Scenic Byway) toward Ketchum/Sun Valley. 2. Travel approximately **9 miles south** of Stanley. 3. Look for the **Idaho Rocky Mountain Ranch** entrance on the **east (left) side** of Highway 75. The ranch is well-signed from the highway. 4. Follow the ranch road to the property. The hot spring pool is located on the ranch grounds. *Note: Access to the hot spring may be limited to ranch guests or may require a day-use fee. It is advisable to check with the ranch directly for current access policies and seasonal hours before visiting.* ## What to Expect Visitors to the Idaho Rocky Mountain Ranch Hot Spring can expect a natural geothermal soaking experience set against the breathtaking backdrop of the Sawtooth Mountains. The spring feeds a pool on the ranch property, and the setting is quintessentially Idaho — rugged, remote, and beautiful. The surrounding area offers abundant outdoor recreation, including hiking, fishing on the Salmon River, mountain biking, and wildlife viewing. The Sawtooth Scenic Byway (Highway 75) is one of the most celebrated drives in the state, and the ranch is a convenient base for exploring both the Sawtooth Wilderness and the Frank Church–River of No Return Wilderness. Summers in the Sawtooth Valley are warm but short, with the most popular visiting season running from June through September. Winters are cold and snowy, and access or availability may be seasonal. The area is remote — Stanley is a small town with limited services, so plan accordingly for fuel, food, and supplies. The hot spring water has historically been used for bathing and relaxation, and visitors have reported it to be a refreshing and rejuvenating soak. As with all natural hot springs, water conditions can vary, and soaking is at your own discretion.