The Painted Hills unit of John Day Fossil Beds National Monument offers a collection of short trails through one of the most visually striking geological landscapes in Oregon, located in Wheeler County approximately 3.5 hours east of Portland via US-26 East and OR-19 South. The monument is free to enter and open year-round; no public transit serves the area and a private vehicle is essential for the 6-mile drive from Mitchell on OR-19.
The Painted Hills are ancient volcanic ash deposits laid down over 33 million years, subsequently eroded into smooth, rounded mounds displaying vivid bands of red, gold, black, and tan — mineral expressions of paleosol layers recording 33 million years of changing climatic conditions. Red clastone contains iron oxides, black layers are manganese oxide-rich lignite, and tan zones represent ancient river deposits. Five short trails serve the unit, ranging from 0.25 to 1.6 miles in length.
The Painted Cove Trail (0.5 miles loop) follows a boardwalk between the most intensely colored red hillocks, prohibiting foot contact with the fragile clay surfaces to prevent erosion. The Leaf Hill Trail (0.25 miles one-way) accesses an Oligocene-epoch leaf fossil bed at the base of a dark claystone hill. The Carroll Rim Trail (1.6 miles one-way, 3.2 miles round-trip) climbs 400 feet to the summit of Carroll Rim at 2,739 feet, providing a panoramic elevated view of the entire Painted Hills unit and the John Day River valley. The Painted Hills Overlook Trail (0.5 miles round-trip) is a paved path to an overlook platform above the primary color bands. The Red Scar Knoll Trail (0.25 miles round-trip) reaches a vantage above distinctive red clay formations.
Trail surfaces include paved path, boardwalk, and packed gravel. The clay soil of the Painted Hills is extremely fragile when wet; footsteps off designated surfaces cause permanent damage, and staying on boardwalks and paved areas is mandatory. No water is available at any Painted Hills trailhead — all supplies must be carried from Mitchell (8 miles). The high desert environment provides minimal shade; sun protection is essential from April through October.
Trail facts
- Trail area
- John Day Fossil Beds National Monument, Wheeler County
- Best season
- April–May (rain saturates clay, intensifying colors) and October
What to bring
- Sun hat and sunscreen
- Comfortable walking shoes (paved and gravel paths)
- Extra water (no water available at trailheads)
- Camera
Location
32651 OR-19, Mitchell, OR 97750
44.6616, -120.2683 View on map
Highlights
- Painted Cove boardwalk threading between intensely red volcanic clay hillocks that shift in shade as sunlight angle changes through the day
- Carroll Rim panoramic viewpoint — a 3.2-mile round-trip climb to 2,739 ft overlooking the entire Painted Hills unit
- 33 million years of volcanic history exposed in visible color bands of red, gold, black, and tan across the hillsides
- Leaf Hill fossil bed — Oligocene-epoch leaf fossils preserved in dark claystone at the base of the Leaf Hill Trail
Tips for visiting
- Visit after light rainfall in spring (April–May) — wet clay intensifies the red and gold colors to their most vivid saturation.
- Arrive in the late afternoon (4–6 p.m.) or early morning when low-angle sunlight maximizes color contrast on the hills.
- Stay on boardwalks and paved trails at all times — footsteps directly on the clay permanently damage the fragile geological formations.
- Carry all water from Mitchell (8 miles away) or Prineville (50 miles); no water is available at any Painted Hills trailhead.
- Cell service is largely unavailable in Wheeler County; download offline maps and monument trail information before departure.
When to visit
April and May offer peak color saturation after spring rains, mild temperatures, and occasional wildflowers in the surrounding high desert. October is also excellent for color intensity and comfortable hiking conditions with significantly fewer visitors than spring.
Accessibility
The Painted Hills Overlook Trail is a paved, wheelchair-accessible path leading to a viewpoint platform above the color bands. The Painted Cove boardwalk is largely accessible, though some uneven sections exist. Carroll Rim and Leaf Hill trails are not wheelchair-accessible due to unpaved steep terrain.
Frequently asked questions
When do the Painted Hills look most colorful?
The hills are most vividly colored in spring (April–May) after rainfall, when saturated clay soils deepen the color contrasts. The hills also change appearance throughout the day as sunlight angle shifts; late afternoon light accentuates the reds and golds most dramatically.
Is John Day Fossil Beds National Monument free to enter?
Yes. There is no entrance fee for John Day Fossil Beds National Monument, including the Painted Hills unit. The monument is administered by the National Park Service.
How far is it from Portland to the Painted Hills?
The Painted Hills unit is approximately 3.5 hours from Portland via US-26 East to OR-19 South. The town of Mitchell, 8 miles from the monument, offers limited services including a small motel and gas station. The drive is scenic through the Oregon high desert.
Are the Painted Hills trails suitable for families with young children?
Yes. The Painted Cove boardwalk (0.5 miles) and Painted Hills Overlook paved path (0.5 miles) are well-suited to children of most ages and older adults. The Carroll Rim Trail involves 400 feet of climbing and is moderate for children ages 8 and up.