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Challis Hot Springs

  • From $10
  • 96–105°F
  • 5 hr 1 min from Boise
  • Walk-in OK

A hot springs unit of Land of the Yankee Fork State Park near Challis, beside the Salmon River, with a 100 x 30 ft warm pool and a smaller pool kept near 105F. Day use is $10 per person, with children 5 and under free. A 68-site state campground is on the same property.

Winter schedule: campground water off and dump station closed since Oct 26, 2026; pools open Wed-Sun.

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✓ Verified November 2026
Steam over the outdoor pool on a misty day at Challis Hot Springs, Challis, Idaho
Photo: Challis Hot Springs
Price
From $10
Water
96–105°F
Nearest town
Challis
From Boise
5 hr 1 min
Reservations
Walk-in OK

Plan your visit

Hours & season

Hours
  • Wed-Sun 8:30am-8:30pm
  • Closed Mon-Tue (current park update)
  • Pools close for lightning or thunder
Season
  • Open year-round
  • Winter: campground open Wed-Sat nights only
  • Campground water and dump station shut off from Oct 26, 2026

Tickets & booking

Price
  • $10/person day use for swimming
  • Children 5 and under free
  • State parks $7 vehicle entrance fee applies unless you hold an Idaho State Parks Passport
AccessDay pass, walk-ins welcome
Booking
  • Day-use booking not described
  • Campsites book via Idaho State Parks reservations (1-888-922-6743)

Rules

Ages
  • Under 18 must be accompanied and supervised by an adult
  • 5 and under free

On site

Pools2
LodgingNo
Camping nearbyYes

Not stated by the venue: swimwear, dogs.

Water temperature

Soaking-pool temperatures as published by the venue or land agency; they vary with season and flow.

Mineral profile

Total dissolved minerals

651 mg/L

Moderately mineralized · Sodium–sulfate (sodium sulfate water)

Sodium155 mg/L
Calcium45.5 mg/L
Magnesium15.5 mg/L
Potassium19 mg/L
Chloride21.5 mg/L
Sulfate140 mg/L
Silica30.5 mg/L
pH
7.1
Temp at source
122°F
Lithium
0.10 mg/L
Fluoride
4.3 mg/L
Boron
0.41 mg/L

Lab analysis of the source water at “14n 19e 23ddd1s Beardsleychallis Hs”, sampled 1979–1983 by the USGS and partners (data). Pool water may be cooled, mixed or treated, and spring chemistry is generally stable over decades. We report measurements only; we don't make health claims.

The pools

PoolTemp
Large pool100 x 30 ft. Target about 96F in summer and 98-100F in winter.96–100°F
Hot pool25 x 18 ft, kept as close to 105F as possible.105°F

As published by the venue. Temperatures shift with the seasons and the weather.

Facilities

  • Showers: yes
  • Restrooms: yes
Good to know
  • State park rule: pets on a 6-foot leash
  • Pools close at first lightning or thunder and reopen 20 minutes after the last

What's here

  • Land of the Yankee Fork State Park unit
  • large 100 x 30 ft warm pool
  • smaller 105F hot pool
  • 68-site campground on site (tent to water/electric RV)
  • on the Salmon River

Getting there

  • From Boise5 hr 1 min194 mi
  • From Salmon1 hr 43 min67 mi
  • From Friedman Memorial / Sun Valley (SUN)2 hr 53 min91 mi

Typical driving time without traffic or snow.

Elevation4,900 ft
Road5025 Hot Springs Road, Challis, ID 83226

Things to do near Challis

museum

Land of the Yankee Fork Interpretive Center

State park museum on Challis-area mining history; Wed-Sun 8:30am-4:30pm.

attraction

Challis Bison Kill Site

Archaeological site with a short paved interpretive path at the Interpretive Center.

attraction

Bayhorse Ghost Town

Mining ghost town unit of the state park; closed for the season from Oct 26, 2026.

Straight-line distances. Campground and trailhead data © OpenStreetMap contributors.

Nearby springs

Goldbug Hot Springs: 29 mi · Slate Creek Hot Springs: 33 mi · Sunbeam Hot Springs: 33 mi

Sources (3)

· checked November 2026

Prices, hours and rules are checked against the official site and land-agency pages. Spot something out of date? Let us know.

  1. parksandrecreation.idaho.gov: Land yankee fork
  2. parksandrecreation.idaho.gov: Challis hot springs
  3. challischamber.com: Relax and unwind at challis hot springs