Red Basin/Clam Beds Loop

If you want Petrified Forest’s big, lonely badlands without the boardwalk crowds, this backcountry loop delivers. Starting near the Blue Mesa Scenic Road, it ducks off pavement and quickly trades guardrails for wide-open bentonite hills, petrified logs, and the namesake clam beds—fossilized freshwater clams embedded in sandstone. Expect a true route, not a maintained trail: you’ll follow washes, a bit of dirt service road, and your own line across rolling badlands.

Distance varies because it’s a route. The standard loop is about 7.4 miles total, but many hikers log closer to 8–9 miles if they poke around viewpoints and side gullies. Either way, there’s minimal shade, no water, and plenty of reasons to slow down—colors pop in purples, blues, and reds, with big views toward Blue Mesa. Solitude is common; you may have the basin to yourself.

Navigation matters. There are no ongoing signs and only occasional use paths, so bring GPS/map and pay attention in the washes and on the mesa rim. The bentonite clay can be firm and fast when dry, but turns to ultra-slick gumbo after rain. Fossil collecting is illegal—admire, photograph, don’t pocket.

Best for curious hikers who like to explore geologic oddities: the clam beds are a highlight, and scattered petrified wood adds another layer of deep time. If you’d prefer a fully built, clearly marked experience with similar scenery, do the short Blue Mesa Loop instead and skip the route-finding.

Best time to hike: Fall and spring are ideal for cooler temps and softer light. Aim for early or late in the day for color-rich photos and even more solitude. Summer heat is brutal with zero shade—skip it. Avoid the loop during or right after rain; the clay becomes treacherously slick.

Practical notes: No day permit required. Leashed pets are allowed in the park’s backcountry. Cell service is unreliable. Carry plenty of water, sun protection, and sturdy shoes; this is a committing desert loop despite the modest elevation changes.