Theodore Roosevelt National Park

Petrified Forest Loop Trail

moderate Solitude SeekersExperienced HikersPhotographers
11.6 mi Distance
1,000 ft Elevation Gain
6-8 hours Estimated Time
roundtrip Trail Type

What to Expect

This is the trail that earns you bragging rights in Theodore Roosevelt. The Petrified Forest Loop drops you into the raw, unmanicured badlands backcountry — no maintained boardwalks, no interpretive signs, just you and ancient wood turned to stone scattered across eroded coulees and grassy plateaus. The first few miles wind through classic North Dakota badlands terrain: crumbly bentonite clay, exposed ridgelines, and draws that all start looking the same if you're not paying attention to your map. The elevation gain comes in rolling waves rather than one sustained climb, but after nearly twelve miles your legs will know it. The payoff is surreal — massive chunks of petrified wood, some logs several feet long, sitting in the open like fossils the earth forgot to bury. This trail belongs to confident navigators who want solitude and don't mind working for it.
Solitude SeekersExperienced HikersPhotographersGeology BuffsBackcountry Navigation

Safety Advisory

Bentonite clay becomes impossibly slick when wet — even light rain turns the trail into a skating rink, and the stuff cakes onto boots adding pounds of weight. Check the forecast obsessively and bail if rain is likely.

There is zero shade for virtually the entire loop. Summer afternoon temperatures regularly push past 100 degrees with no tree cover and no water sources — heat exhaustion is a real risk. Start at dawn or skip July and August entirely.

Rattlesnakes are active from May through September and favor the rocky areas near petrified wood deposits. Watch where you step and where you sit for breaks.

Trail Details

Distance 11.6 miles round-trip
Elevation Gain 1,000 ft
Difficulty moderate
Estimated Time 6-8 hours
Trail Type roundtrip
Pets Not allowed
Season Year-round
Trailhead Petrified Forest Loop Trail

Pro Tips

Trail Tip

Carry a GPS device or download offline maps — the trail is lightly marked with posts that can be hard to spot in the tall grass, and several junctions are easy to miss when the bentonite all looks identical.

Trail Tip

Stash extra water at the trailhead in a cooler for your return — there are no reliable water sources on the loop, and twelve miles of exposed badlands in summer will burn through three liters faster than you'd expect.

Trail Tip

Start counterclockwise to hit the petrified forest concentration in the western section while your energy is still high and the morning light rakes across the logs at low angles — photographers will thank themselves.

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3 campgrounds, 35 trails, 733K annual visitors

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