Moderate

Old Bunsen Peak Road Trail

Multi-use old road with big canyon views and an Osprey Falls option
Old Bunsen Peak Road Trail, Yellowstone National Park
Distance6 mi
Typical time3.5 hr
DifficultyModerate
PetsNot allowed

Overview

This is the old service road that wraps around the south and east sides of Bunsen Peak—wide, unpaved, and multi‑use—very different from the steep summit path. It runs 6 miles one way from the Bunsen Peak area to the Glen Creek side. Expect mostly level walking for the first ~3 miles, then a steeper, winding descent with airy drop‑offs as you approach Glen Creek. As an out‑and‑back, that descent becomes your climb on the return, so plan accordingly.

Common ways to hike it:

  • Easy sampler: out‑and‑back to the signed Osprey Falls junction (about 6 miles round trip, mostly level).
  • Through‑route: 6 miles one way with a shuttle vehicle on the Glen Creek end.
  • Full commit: the entire out‑and‑back (about 12 miles total) with roughly 960 feet of elevation regained on the way back.

Scenery and feel

You’ll get a big‑sky Yellowstone vibe without the constant grind of the summit trail. The road’s curves traverse open slopes with occasional exposure and sweeping looks into Sheepeater Canyon. The Osprey Falls spur drops steeply from this road—add it only if you’re ready for a serious canyon descent and climb back out.

Trail surface and use

This is double‑track dirt/gravel with some steep, winding sections. It’s open to hikers, cyclists, and in winter to skiers and snowshoers. It’s not wheelchair accessible, and the exposed curves can feel spicy if you’re uncomfortable with drop‑offs.

Wildlife and safety

This is prime bear country—carry bear spray, hike in groups, and make noise, especially in forested stretches. The road can be icy in shoulder seasons and winter; a slip on the exposed curves could have consequences. Watch footing on marbles of gravel on the steeper bends.

Tips and logistics

  • Length: 6 miles one way (old road). Popular options include a 6‑mile round trip to the Osprey Falls junction, a 6‑mile shuttle through‑hike, or a 12‑mile out‑and‑back.
  • Start at the Bunsen Peak area just south of Golden Gate (across from the Glen Creek trailhead). Parking is limited—arrive early.
  • Gear: sturdy shoes, layers for wind, plenty of water; trekking poles help on the steeper, loose curves. If you’re eyeing the Osprey Falls spur, budget extra time and energy.

Best time to go

Late spring through fall offers the firmest tread and the easiest logistics. Early season can hang onto ice and snow on shaded sections; winter turns this into a solid ski or snowshoe tour if you’re prepared. Start early for cooler temps and to secure parking; afternoon light adds depth to the canyon views.

Who will love it (and who won’t)

If you like quieter miles, gradual grades, and the option to bike or ski, this road delivers. If you’re chasing the big 360° summit panorama, the separate Bunsen Peak summit trail is the better match.

Pros

  • Multi‑use access: hiking, biking, and excellent winter skiing or snowshoeing
  • First half is mostly level, making an easy out‑and‑back to Osprey Falls junction

Cons

  • Steep drop‑offs on winding curves feel exposed, especially when icy
  • Full out‑and‑back sneaks in a 960 ft climb on the return

Parking

Small lot just south of Golden Gate on Grand Loop Road, across from the Glen Creek trailhead; limited spaces—arrive early.

Caution

Bear country; carry bear spray. Icy conditions and exposed curves can be hazardous, especially on the steeper, winding sections near Glen Creek.

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