Quick FactsOverview
About Big Smokey Hot Spring
Big Smokey Hot Spring, Idaho is a free, undeveloped geothermal spring in the Sawtooth National Forest in Camas County, approximately 25 miles from the town of Fairfield in central Idaho. The spring is classified as hot by the NOAA thermal springs database and surfaces at approximately 102 degrees Fahrenheit at an elevation of 6,320 feet in the Big Smokey Creek drainage of the Smoky Mountains. Fairfield, a small ranching community on US Highway 20, is the nearest town with services.
Big Smokey Hot Spring is often mentioned alongside Skillern Hot Springs (140 degrees, separate spring accessed via a 6-mile round-trip hike), as both are in the same drainage system of the Sawtooth National Forest. The area is geothermally active, with Worswick Hot Springs (180 degrees), Preis Hot Spring (106 degrees), and Lightfoot Hot Springs (133 degrees) all within a 20-mile radius. This concentration makes the Fairfield area one of the richest clusters of natural hot springs in Idaho.
The spring is on USFS land with open access. No facilities exist at the spring. Pool conditions vary with season and visitor use.
Location & Access
Getting to Big Smokey Hot Spring
Big Smokey Hot Spring is reached by a four-mile hike from Baker Creek Road through the Big Smokey Creek drainage. The trail follows the creek through sagebrush steppe, flowering meadows, and conifer forest in the Smoky Mountains of the Sawtooth National Forest.
From Fairfield, drive north on Big Smokey Road (Forest Road 227) into the Sawtooth National Forest. The road is unpaved and rough in places. The trailhead access is from Baker Creek Road. A high-clearance vehicle is recommended for the drive. The road is closed by snow from late fall through late spring, with access typically available from late June through October depending on conditions.
Regional Context
For visitors seeking hot springs near Fairfield, the Big Smokey Creek drainage offers multiple options. Skillern Hot Springs is accessed from the Big Smokey Creek Trailhead via a separate 6-mile round-trip hike with a choice of high and low trail routes. Preis Hot Spring (106 degrees) is roadside. Worswick Hot Springs (180 degrees, dangerously hot, viewing only) is a short walk from the road. Ketchum and Sun Valley are approximately 40 miles east and offer additional hot springs including Russian John (100 degrees) and Frenchman Bend (124 degrees).
Suitability & Accessibility
Who Should Visit Big Smokey Hot Spring
Big Smokey Hot Spring suits hikers and hot springs enthusiasts exploring the geothermally rich Sawtooth National Forest backcountry near Fairfield. At approximately 102 degrees Fahrenheit, the water is at a comfortable soaking temperature. The four-mile hike is moderate in difficulty and manageable for most reasonably fit visitors, including families with older children.
The spring is best visited from late June through October when the road and trail are free of snow. The exposed terrain along the hike can be hot in summer. Bring sun protection and plenty of water. The remote location means fewer visitors than more accessible Idaho hot springs, offering a quieter soaking experience.
Accessibility at Big Smokey Hot Spring
The spring is not wheelchair accessible. The four-mile trail is on unimproved ground. No facilities exist at the spring. Those exploring natural hot springs Idaho offers in the Sawtooth National Forest who want easier access should visit Preis Hot Spring (106 degrees, roadside) or Russian John Hot Spring (100 degrees, roadside near Ketchum) for more convenient soaking with minimal hiking. Bowns Campground, approximately ten miles from the spring, is the nearest listed campground for overnight stays. The Sawtooth National Forest backcountry around Fairfield is a working landscape of ranching and recreation with a genuine frontier feel.
Safety & Etiquette
Big Smokey Hot Spring Safety Tips
Big Smokey Hot Spring is in the backcountry of the Sawtooth National Forest, and visitors should be prepared for remote conditions. The water at approximately 102 degrees Fahrenheit is at a comfortable soaking temperature, but always test before entering as conditions can vary with season.
The four-mile hike passes through exposed terrain with limited shade. Carry at least two liters of water per person and wear sun protection. The elevation of 6,320 feet can affect visitors arriving from lower elevations. The area receives over 12 feet of snow annually, making winter access impractical.
Wildlife and Environmental Awareness
Black bears, mountain lions, and moose are present in the Sawtooth National Forest. Make noise on the trail and store food properly. Rattlesnakes may be present in lower-elevation sections. The creek crossings along the trail can be hazardous during spring runoff.
Leave No Trace
Pack out all trash and waste. Do not alter the spring or surrounding area. The Sawtooth National Forest is a heavily used recreation area and protecting the springs depends on responsible visitor behavior. Cell service is not available in the backcountry. Inform someone of your hiking plans before departing. The nearest medical facilities are in Fairfield, approximately 25 miles away on rough forest roads. Carry a first aid kit and consider a satellite communication device for emergencies in this remote area of the central Idaho Sawtooth National Forest.
