Ebro Springs
Ebro Springs discharges water at 136 degrees Fahrenheit at 7,838 feet elevation in Yellowstone's backcountry, requiring a 2-kilometer hike from the nearest road. This National Park Service-managed thermal feature heats water 102 degrees above the frigid 34-degree annual average air temperature in terrain that receives 27 inches of precipitation and 144 inches of snow annually.
The spring sits in subalpine terrain within Yellowstone's eastern sector, where lodgepole pine forest and thermal meadows characterize the landscape at elevations approaching 8,000 feet. The 2-kilometer distance from the Grand Loop Road places the spring beyond casual visitor range, in terrain where wildlife encounters are common and thermal features receive minimal human impact. Snowpack dominates the landscape from October through May at this elevation.
Historical documentation of Ebro Springs is minimal in park records and thermal catalogs. The name's origin is not well established in available sources. The spring's backcountry location meant it received less attention from early surveyors compared to roadside features, and it remains among Yellowstone's less-studied thermal areas despite permanent protection status.
Access via a 2-kilometer hike requires leaving from established trailheads along the Grand Loop Road. Check with rangers regarding current trail conditions and bear activity, as this area sees substantial grizzly and black bear use. July through September provides the most reliable access window when snow has melted from trails. Threemile Campground, 32.5 kilometers from the trailhead outside the park's east entrance, offers the nearest reservable camping with RV facilities.
Is Ebro Springs worth visiting?
Best for
- Hot spring soaking
- Overnight camping trips
- Winter soaking with dramatic temperature contrast
Overview Threemile Campground is located just three miles from the east entrance of Yellowstone National Park, and 50 miles from the full service gateway community of Cody, in northwestern Wyoming. The area is an ideal destination for a family getaway, with many opportunities for outdoor recreation. Hard-sided camp trailers and RVs are required.Recreation Great opportunities for hiking, fishing, scenic driving and wildlife viewing are available around the campground. The North Fork of the Sho...