File:Longmire by night (6997796071).jpg — public domain
Longmire Mineral Springs flows at 77 degrees within Mount Rainier National Park at 2,758 feet elevation, emerging 31.9 degrees above ambient just 132 meters from Longmire-to-Paradise Road. USGS analysis reveals sodium-chloride chemistry with 710 mg/L sodium, 940 mg/L chloride, and notably high calcium at 500 mg/L.
The springs emerge in old-growth forest along the Nisqually River valley on Rainier's southwest flank. Annual precipitation totals 90.2 inches with massive snowfall of 311.6 inches, supporting towering Douglas fir, western red cedar, and western hemlock. The historic Longmire area includes the National Park Inn, museum, and trailheads accessing Paradise and the Wonderland Trail.
History of Longmire Mineral Springs
James Longmire discovered these springs in 1883 while exploring the mountain, soon establishing a hotel and spa that attracted visitors seeking the waters' purported healing properties. His homestead became the park's first headquarters when Mount Rainier achieved national park status in 1899. The springs no longer support bathing facilities but remain accessible along an interpretive trail.
Visit May through October when the Longmire-to-Paradise road is reliably open. Cougar Rock Campground sits 2.3 kilometers away with reservable sites. The mineral springs trail makes an easy addition to hikes toward Carter Falls or the Trail of the Shadows loop. Winter brings deep snow and road closures above Longmire.
Is Longmire Mineral Springs worth visiting?
Longmire Mineral Springs is well suited for overnight camping trips.
Annual Precip: 90.2 in
Annual Snow: 311.6 in
February
Air 32°F · Water 77°F · +45° contrast
December
Air 32°F · Water 77°F · +45° contrast
January
Air 34°F · Water 77°F · +44° contrast
February offers 32°F more contrast than August
Recent Temperature
77.7°F
(25.4°C)
Measured Sep 02, 1983
The water at Longmire Mineral Springs is slightly acidic (pH 5.8). It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sodium (supports circulation and skin hydration).
pH influences mineral absorption through skin
May support bone density and joint health
Known for muscle relaxation and stress relief
Supports circulation and skin hydration
Traditionally used for skin conditions and inflammation
Natural antiseptic with skin health benefits
Iron-rich springs may support circulation
Overview
Cougar Rock Campground, on the southwest side of Mt. Rainier National Park, is conveniently located near Paradise. Individual campsites are reservable on this page. Group campsite reservations can be made via Cougar Rock Group Campground.
Paradise is the most popular destination in the park, with a lodge and visitor center, many miles of hiking trails and a commanding view of the mountain-the highest in the state and Cascade range. The main attraction at Mount Rainier National Park...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Camping gear
Nearby camping at Cougar Rock Campground
Trash bag
Pack out what you pack in
USGS Quad: MT. RAINIER WEST 7.5 · NOAA: 2.0 · AMS Map: YAKIMA
What is the water temperature at Longmire Mineral Springs?
Longmire Mineral Springs has a water temperature of 77°F (25°C). This is a warm thermal spring.
Where is Longmire Mineral Springs located?
Longmire Mineral Springs is located in Pierce County, Washington at 2,758 feet elevation, near Buckley. Coordinates: 46.7520°N, 121.8140°W.
How do I get to Longmire Mineral Springs?
Longmire Mineral Springs has Short Walk road access, with the nearest road being Longmire-to-Paradise Road (433 ft from the road).
Is Longmire Mineral Springs free to visit?
Longmire Mineral Springs has Open access. It is managed by National Park Service.
Can I camp near Longmire Mineral Springs?
Yes, Cougar Rock Campground is located nearby (1.4 miles away).
What minerals are in the water at Longmire Mineral Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 5.8 (slightly acidic).
Is it safe to soak at Longmire Mineral Springs?
Longmire Mineral Springs is generally safe for soaking at its recorded temperature. Always tell someone your plans before visiting remote hot springs.
Is Longmire Mineral Springs crowded?
Longmire Mineral Springs sees varying levels of visitors depending on the season and day of the week.
What should I bring to Longmire Mineral Springs?
Essentials for Longmire Mineral Springs: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in.