Radium Hot Springs, Radium, CO

## Overview Radium Hot Springs is a warm, natural hot spring nestled along the banks of the Colorado River, located just a few miles from the small community of Radium in Grand County, Colorado. The spring feeds a single-temperature pool that stays around 90°F year-round, making it a popular soak for adventurers exploring the upper Colorado River corridor. The spring sits at the base of a dramatic 60-foot cliff — a well-known spot where thrill-seekers leap into the Colorado River below. Visitors who make the jump (or simply float by) can swim directly over to the hot pool, which measures roughly 20 feet in diameter. Over the years, someone has stacked rocks into an oval shape to create a natural hot tub effect, containing the warm water and making for a comfortable soak with views of the surrounding canyon. Radium Hot Springs is open 24 hours a day, 365 days a year, and there is no fee to visit. Its remote location and rugged access help keep it relatively uncrowded, rewarding those willing to make the effort to get there. ## Directions The nearest address is along County Road 111, Radium, Colorado (GPS: 39.96013, -106.54005). **By vehicle and on foot (from the east):** 1. Head west on I-70 to the Highway 40 exit. 2. Follow Highway 40 north/west to Kremmling. 3. In Kremmling, turn left (south) onto Highway 9. 4. Drive approximately 2 miles and turn right onto Trough Springs Road. 5. Follow the jeep road for about 12 miles. A high-clearance 4×4 vehicle is strongly recommended — the road is rough and can be dangerous in poor conditions. 6. Continue on the jeep road for approximately 1 more mile until you reach an overlook above the Colorado River. 7. From the overlook, climb down to the river and walk upstream to the hot spring. Look for it below a large rock outcrop at the base of the cliff. **By river:** Many visitors find the easiest approach is to float down the Colorado River by kayak, raft, or other watercraft. The spring is visible from the river at the base of the prominent cliff. Simply pull over and swim or wade to the warm pool. **On foot:** The hike from the nearest road access takes roughly 20 minutes. The terrain is uneven and involves scrambling down to the river, so sturdy footwear is recommended. ## What to Expect Radium Hot Springs is a backcountry hot spring experience — there are no developed facilities, restrooms, or signage. The soaking pool is a rustic, rock-lined oval at the river's edge, fed by the natural warm spring. Water temperature has been reported at approximately 90°F, which feels pleasantly warm rather than scalding — ideal for a long, relaxing soak. The setting is stunning: the spring sits beneath towering cliffs along the Colorado River, surrounded by rugged canyon scenery. The 60-foot cliff above the spring is a popular (though risky) jumping spot into the river — only experienced cliff jumpers should attempt it, as river conditions and depth can vary. Access is part of the adventure. The jeep road in is rough and remote, so a capable 4×4 vehicle is essential if you're driving. Many visitors prefer the river approach, combining a float trip with a hot spring stop. If you're hiking in, expect about a 20-minute walk with some scrambling down to the river level. Because of its remote location, plan to be self-sufficient: bring water, snacks, and anything you'll need. Cell service is limited to nonexistent in this area. The spring can be visited year-round, though winter access via the jeep road may be impassable due to snow. River access depends on seasonal water levels and flow conditions.