Challenging

Fiery Furnace

Permit-only sandstone maze: squeezing, scrambling, and pure exploration.
Fiery Furnace, Arches National Park
Distance2.3 mi
Typical time3 hr
DifficultyChallenging
PetsNot allowed

What to expect

Fiery Furnace is not a typical trail—it’s a labyrinth of narrow Entrada Sandstone fins, slot-like corridors, and hidden arches. You’ll squeeze through tight passages, scramble short ledges, and backtrack from dead ends. The ranger-led loop is about 2–2.3 miles total (typically counter-clockwise), but self-guided mileage varies with your route-finding. Expect 2–3 hours; three is common because progress is slow and deliberate.

Why go (and who should skip it)

If “puzzle-like navigation in jaw-dropping red rock” sounds fun, this is one of the most unique, rewarding experiences in the park. The permit system keeps crowds low, so it feels adventurous and surprisingly quiet. That said, it’s strenuous in a scrambly, agility-required way—no big climbs, but lots of hands-on moves and narrow squeezes. If you want a well-marked path, choose another hike.

Permits and access

Entry is strictly controlled. You must join a ranger-led hike or secure a limited self-guided permit. First-timers are strongly encouraged to go with a ranger for safety and natural history context. Self-guided permits are limited daily and require an orientation video; pick-up is in person. Ranger-led groups are small. Typical fees are about $16 per person for ranger-led tours and $10 per person for self-guided permits. Use the upper parking area for hike access; the lower lot is for the viewpoint only.

Conditions and navigation

There is no traditional, well-marked trail. Even with some route markers on the main loop, you’ll need to read the terrain and pay attention to landmarks. GPS can be unreliable between high rock walls—don’t count on it. Surfaces are slickrock and sandy washes; after rain, rock can be slippery. Travel on rock or in washes to protect fragile biological soil crust.

Geology and scenery

This maze exists thanks to the erosion of Entrada Sandstone into long, tight fins, spires, and arches. The light-and-shadow show is outstanding, especially near sunrise or sunset when the walls glow with the “fiery” color that gave the area its name.

Best time to hike

Spring and fall offer the best temperatures. Summer can be brutally hot—time your start early or late if you go then. Winter access can be limited by snow or ice. After an early-2025 closure, self-guided access reopened in April and ranger-led hikes resumed in May.

Tips

  • Strong footwear, plenty of water, sun protection, and patience are mandatory.
  • Set a conservative turnaround time; it’s easy to get turned around.
  • New to the area? Book the ranger-led hike first, then return with a self-guided permit if you want more exploration.

Pros

  • Permit limits keep crowds low, enhancing the sense of exploration
  • Ranger-led tours add excellent geology and ecology context for first-timers

Cons

  • Easy to get lost; GPS is unreliable among the fins
  • Permit logistics: limited daily quotas and required orientation

Parking

Park at the upper Fiery Furnace lot for hike access; the lower lot is viewpoint-only.

Caution

Complex route-finding with dead ends, narrow ledges, unreliable GPS, intense summer heat, slippery rock after rain, and fragile biological soil crust—stay on rock/washes.

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