Idaho’s Sawtooth country hides a 387-foot-deep lake with skies you won’t believe

Idaho’s deepest mountain lake rewards the long drive

Five miles south of Stanley, a two-lane road peels off Highway 75 and drops you into a valley that feels like it belongs in another century.

Redfish Lake sits at 6,547 feet in the Sawtooth National Recreation Area, surrounded by peaks that scrape past 10,000 feet.

The water is cold and blue-green, the beaches are white sand, and the sky after dark is something most Americans have never seen. This is Idaho’s mountain country, and it goes deep in every direction.

The fish that turned a lake red

Long before anyone built a lodge or strung a trail marker, the lake had a name people could see. Sockeye salmon once returned from the Pacific Ocean in such numbers that the water turned red during spawning season.

In the 1880s, an estimated 25,000 to 35,000 fish made the trip every year, traveling more than 900 miles and climbing over 6,500 feet in elevation. Dam construction gutted those runs.

The sockeye were listed as endangered in 1991, and a recovery program has worked to bring them back ever since.

Cold water, white sand and nowhere else to be

The lake stretches 4.5 miles long, three-quarters of a mile wide, and drops 387 feet at its deepest point. That snowmelt water runs blue-green and remarkably clear.

Sandy beaches line the north shore near the lodge, and the water stays in the mid-60s even through July and August, cold enough to make you move fast when you wade in.

If the north shore gets too crowded, the seasonal shuttle boat runs you across to quieter, rockier spots on the south side that most people never reach.

Get out on the water without a boat

You don’t need to haul gear to get out on the lake.

The marina on the north shore rents pontoon boats by the two-hour, four-hour, or eight-hour block, plus kayaks, canoes, and paddleboards.

The shuttle boat runs on demand during summer with no reservations needed, so you can cross to the south shore trailheads whenever you’re ready.

If you bring your own watercraft, there’s a public launch ramp.

The lake is big enough that once you’re out on the water, you can put some real distance between yourself and the shore.

Trails that go from easy strolls to all-day climbs

The trail system here runs from an easy lakeside walk to a 17.5-mile loop around the entire lake.

The Fishhook Creek Trail starts near the north shore and winds through meadows with the Sawtooth Range laid out in front of you. The Bench Lakes trail climbs to a series of alpine lakes at moderate difficulty.

If you want to push deeper into the Sawtooth Wilderness, take the shuttle to the south shore and pick up the backcountry trails from there. Free self-issued wilderness permits are available right at the trailheads.

Cast a line from shore or troll the deeper water

Rainbow trout, bull trout, and kokanee salmon all live in the lake.

Shore fishing is possible, but trout go deep in summer to find cooler water, so a boat tends to produce better results. One hard rule: sockeye salmon are strictly off-limits, and any you hook must go back immediately.

You’ll need a valid Idaho fishing license before you wet a line, and current regulations from Idaho Fish and Game are worth checking beforehand since rules on bull trout can change.

Bring your own gear because tackle shops in Stanley are small.

Ride through wildflower meadows above the lakes

Guided horseback rides leave from a corral inside the recreation area, and the range of options is wider than you might expect.

A popular shorter loop circles Little Redfish Lake with views of both lakes and the peaks behind them.

Longer rides push up into the Sawtooth Wilderness, gaining elevation until the trees thin out and wildflower meadows open on both sides of the trail.

The rides work for beginners, and a full-day excursion will take you somewhere most visitors never go.

Hit the Salmon River before the canyon swallows it

The Salmon River runs through Stanley, and it’s Idaho’s longest undammed, free-flowing river contained within the state’s borders. Several outfitters in town run half-day and full-day rafting trips.

If you want the real thing, a multi-day trip down the Middle Fork of the Salmon takes you deep into roadless backcountry where the canyon walls close in and the whitewater gets serious. Rafters come from around the country for those runs.

Stanley is the launching point, and it’s about as far from a city as you can get in the lower 48.

Soak in hot springs right along the river

Within about 12 miles of Stanley, several natural hot springs sit along the Salmon River corridor. Sunbeam Hot Springs mixes hot water with cool river current at the water’s edge, about 12 miles north of town.

Basin Creek Hot Springs, about eight miles out, flows straight from the rocks into the river, with rough pools that visitors have stacked together from stones.

The water at the source can hit 170 degrees, so test before you step in. These are natural, unimproved sites, and the rule is simple: pack out everything you bring.

Look up and count stars most Americans have never seen

Redfish Lake sits inside the Central Idaho Dark Sky Reserve, designated in December 2017 as the first gold-tier International Dark Sky Reserve in the United States. The reserve covers 906,000 acres across four counties.

More than 80 percent of Americans can’t see the Milky Way from where they live because of light pollution. Out here, it stretches across the full width of the sky on a clear night.

Highway 75 between Redfish Lake and Pettit Lake runs through the reserve’s core zone, so you don’t even have to leave the road to get under it.

Watch young salmon grow at the hatchery

About five miles south of Stanley on Highway 75, the Sawtooth Fish Hatchery raises spring Chinook salmon and collects steelhead eggs.

It opened in 1985 as part of a compensation program to offset fish losses caused by dam construction downstream.

Free guided tours run daily from Memorial Day through Labor Day, and there’s a kids’ fishing pond stocked with rainbow trout on site, open to anglers 17 and under.

It’s a short stop that makes the salmon story at the lake make a lot more sense once you’ve walked through it.

A 1929 lodge that’s still the heart of the lake

Robert Limbert built Redfish Lake Lodge on the north shore in 1929, and it has run as the base camp for the lake ever since.

The lodge operates from Memorial Day through October and handles a lot of ground: dining, a general store, bike rentals, boat rentals, and the shuttle service across the lake.

Free summer concerts run through the season at the lodge pavilion. Nearly a century in, it still sets the tone for the place.

Come for a meal even if you’re not staying. The deck looks straight across the water at the peaks.

Exploring Redfish Lake in Idaho

To get to Redfish Lake, take Highway 75 to the paved access road about five miles south of Stanley. From Boise, that’s roughly 130 miles north via Highway 21, about three hours through mountain roads.

From Sun Valley, take Highway 75 north over Galena Summit, about 60 miles. Stop at the Galena Summit Overlook on the way in for a long view of the entire Sawtooth Valley.

Summer campgrounds at Glacier View, Point and Redfish Outlet fill up fast, so book well ahead. Redfish Lake Lodge is at 401 Redfish Lodge Rd, Stanley, Idaho.

This article was created with AI assistance and human editing.

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