0.3 mi of trail, end to end · about 250 ft of climbing · 1,483 ft–1,710 ft · native surface · trail class Developed · hiking
TrailheadTrail Of The Fossils, Clarno Arch Trail 1,476 ft Drive there
Clarno Arch Trail the Park Service's write-up
15-45 Minutes · dogs allowed
Start Clarno Unit
Clarno Arch Photo: NPS Photo
This 0.5 mi (0.8 km) trail climbs almost 200 ft (60 m) in height to the base of the Palisades to a view of an arch above.
No collecting is permitted.
Accessibility This 0.5 mi (0.8 km) trail climbs 200 ft (60 m) in height with an average width of 32.7 inches and minimum width of 15 inches. Trail composition varies from compacted gravel to dirt. There is a bench at the end of the trail. Potential hazards: Rocks, muddy after rain and snow
The lines are the National Park Service's public trails layer, the trailheads and the waterfalls, views, peaks and historic places along them the Service's public points of interest, read 2026-10-16 and simplified for the map; the length is the line's, end to end. The write-ups are the Service's own "things to do" text, unedited. Heights come from USGS 3DEP through Terrain Tiles on AWS (Mapzen/Tilezen), read along each line and rounded; a short trail on steep ground can be off by a few tens of feet. Closures change: check the park's own site before you go.
