Radium Warm Springs
- Free
- 2 hr 54 min from Denver
- Roadside
A warm spring pool above the Upper Colorado River near the hamlet of Radium, southwest of Kremmling. The BLM directs visitors to a trailhead at the end of Warm Springs Road, because the old social trail from the CPW Mugrage site is closed to protect bighorn sheep habitat. A fee campground and river access are nearby at the Radium Recreation Area.
- Price
- Free
- Nearest town
- Kremmling
- From Denver
- 2 hr 54 min
- Hike (one way)
- Roadside
Plan your visit
Hours & season
| Season |
|
|---|
Tickets & booking
| Price |
|
|---|---|
| Access | Free public access |
| Booking |
|
On site
| Lodging | No |
|---|---|
| Camping nearby | Yes |
| Land manager | BLM / Colorado Parks & Wildlife (Radium SWA) |
Not stated by the land manager: swimwear, ages, dogs.
Soak responsibly
- Pack out everything, including food scraps and toilet paper. Use WAG bags where required.
- No soap, shampoo or sunscreen in the pools; rinse away from the water.
- Check permits and closures with BLM / Colorado Parks & Wildlife (Radium SWA) before you go.
- Keep groups small and give others space. Respect posted dog and camping rules.
Water temperature
This venue doesn't publish pool temperatures.
Mineral profile
Total dissolved minerals
241 mg/L
Lightly mineralized · Sodium–sulfate (sodium sulfate water)
- pH
- 7.95
- Temp at source
- 102°F
- Fluoride
- 2.8 mg/L
- Iron
- 0.03 mg/L
Lab analysis of the source water at “Radium Springs” (0.5 mi from Radium Warm Springs), sampled 2022 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.
What's here
- Upper Colorado River
- access via Warm Springs Trail from end of Warm Springs Road
- old social trail from CPW Mugrage site closed for bighorn sheep habitat
- BLM Radium campground nearby (reservations required)
Getting there
- From Denver2 hr 54 min120 mi
- From Glenwood Springs1 hr 41 min70 mi
- From Eagle County (EGE)1 hr 19 min44 mi
Typical driving time without traffic or snow.
| Elevation | 6,981 ft |
|---|---|
| Road |
|
| Trail | Warm Springs Trail (foot only) or Ol' Warm Springs Trail (foot, horse, bike, e-bike) from the Warm Springs Rd trailhead |
| Parking | Use the BLM parking area at the end of Warm Springs Rd. No parking along narrow Radium Rd |
| Cell service | None |
Things to do near Kremmling
Pumphouse Recreation Area
BLM campground and river access on the Upper Colorado below Gore Canyon, with boat ramps and trails
Colorado River Headwaters Scenic and Historic Byway
Byway from Grand Lake to State Bridge that follows Trough Road past Radium
Radium Recreation Area
BLM river access for rafting, kayaking and fishing, with reservable campsites
Campgrounds
- Radium Recreation Area1.2 mi
- Lynx Pass Campground12.1 mi
- Cow Creek South Campground15.4 mi
- Colorado River Camp16.1 mi
Straight-line distances. Campground and trailhead data © OpenStreetMap contributors.
Nearby springs
Hot Sulphur Springs Resort & Spa
A long-running hillside resort in the town of Hot Sulphur Springs with about 19 public mineral pools between 98 and 112°F. Day passes are walk-in only, and some pools are restricted to ages 12 and up. The property also has a motel, private baths, massage and a grill.
Old Town Hot Springs
A non-profit community hot springs and fitness center in downtown Steamboat Springs, fed by the Heart Spring, which flows at about 102-103°F. Alongside several soaking pools and a cold plunge it has water slides, lap swimming, a gym and a climbing wall. Day admission is walk-in.
Strawberry Park Hot Springs
Rustic stone-lined pools in a forested valley about 7 miles from downtown Steamboat Springs, reached by a partly unpaved road that requires 4WD and winter tires from November through April. Visits are booked in 2-hour slots and paid in cash. Pools are clothing-optional and limited to adults after dark.
Hot Sulphur Springs Resort & Spa: 24 mi · Old Town Hot Springs: 39 mi · Strawberry Park Hot Springs: 44 mi
Sources (4)
· 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.