Russian John Hot Spring

What to expect

Russian John is one of the smallest and simplest springs in the Wood River Valley. It is one pool, a little way up a sagebrush slope from Highway 75, with low rock walls held together in places with mortar and a bottom of sand and clay. Warm water seeps up through the bottom rather than pouring in from a pipe or a creek. On a still day the water is clear.

The key thing to know is that it is lukewarm. A 1990 Idaho Department of Water Resources study of geothermal water in the Big Wood River valley, as cited by one spring directory, measured the source at about 89°F32°C, and the pool is usually up to about 86°F30°C depending on the weather. Visitors over the years have described it the same way: pleasant on a hot day, too cool for an evening soak. Treat it as a warm dip during a summer drive, not a destination soak.

Accounts of the pool’s size and depth vary. One long-running visitor log describes it as shallow, while a 2009 local magazine piece said it was reportedly over most people’s heads. The pool is maintained by users, so it changes over time. Look before you jump in.

The same study found the water alkaline, at a pH of about 9.1, with relatively low dissolved minerals and no real smell. Visitors have noted algae in spring after quiet winters.

There is a fire pit and a bench near the pool and nothing else: no toilets, no trash cans, no signs worth relying on.

The name comes from the area, which carries the Russian John name on the nearby guard station and trail. One directory says it traces to a Russian sheepherder who used the range in the late 1800s and that the pool is the remains of his soaking spot. We could not confirm that story in a second source, so take it as local lore.

Getting there

The spring is in the Sawtooth National Recreation Area, part of the Sawtooth National Forest, in the upper Big Wood River valley north of Ketchum.

• From Ketchum: Drive north on Idaho Highway 75 (the Sawtooth Scenic Byway) for about 18.1 miles. You pass the Sawtooth NRA headquarters and the Easley Campground turnoff on the way. Near milepost 146, opposite the Russian John Guard Station, turn left (west) onto a short dirt road. Park after about 200 feet.
• From Stanley: Come south on Highway 75 over Galena Summit and down into the Big Wood valley. The turnoff is on your right, across from the guard station.

The parking area sits on a slope roughly 70 yards above the highway. Any car can make it in summer. From there it is about 300 feet on foot up to the pool. The walk is short and fairly easy but uneven.

When to go

Summer is the only season most people find comfortable. On a hot July or August afternoon a lukewarm pool is welcome, especially after a hike or bike ride. Summer is also when the spring sees the most traffic, and one visitor log says it gets heavy use and some abuse in the warm months. Mornings are quietest.

Spring and fall are possible but the water will feel cool once the air drops. Winter access is technically possible, but the pullout may be covered by plowed snow and the water is too cool to keep you warm.

At about 6,900 feet, nights are cold even in summer. Bring a warm layer for when you get out.

Rules and etiquette

• No fee and no permit needed.
• No camping at the spring. Use one of the campgrounds down the valley.
• Swimsuits required. A Sawtooth National Forest order bans public nudity on all forest land and roads through September 2031, so older listings of Russian John as clothing optional no longer apply.
• No soap or shampoo, biodegradable or not. A pool this small with this little flow does not flush itself clean.
• Pack out everything, including bottle caps and food scraps.
• Fires: Check current Sawtooth National Forest fire restrictions before using the fire pit. Summer restrictions are common.
• Leave the walls alone. The rock and mortar walls are what make the pool. Do not dig out the bottom or move stones.

Where to stay nearby

• Easley Campground is on the Big Wood River, with its turnoff 14.1 miles north of Ketchum, about 4 miles south of the spring. It has family sites under Douglas fir, pine and aspen, vault toilets and drinking water, but no electricity. Sites can be booked on Recreation.gov. Easley Hot Springs, a developed pool, is just past the campground entrance.
• North Fork, Wood River, Murdock and Caribou campgrounds are other Forest Service sites a few miles south, near the Sawtooth NRA headquarters.
• Ketchum and Sun Valley, about 18 miles south, have the closest hotels, restaurants and full services.
• Stanley, over Galena Summit to the north, has lodges and cabins and more hot springs along the Salmon River.

Safety notes

• Water quality: The pool is warm and stagnant enough for algae and bacteria. Keep your head above water and do not drink it.
• Highway: Highway 75 is fast. Slow down well before the turnoff and watch for traffic when pulling out.
• Wildlife: Deer and elk use this valley. Drive carefully at dawn and dusk.
• Altitude and cold: At nearly 7,000 feet the sun is strong and evenings get cold fast. Bring sunscreen, water and a warm layer.
• Cell service fades north of Ketchum. Download maps before you leave town.

Nearby stops worth adding

Russian John works best as a stop on a bigger day. Pair it with a hot soak at Easley Hot Springs down the road, or drive west of Ketchum to Frenchman’s Bend Hot Springs on Warm Springs Road. Continuing north, the highway climbs to Galena Summit, with a pullout that looks across the headwaters of the Salmon River to the Sawtooth Range.