Bliss Pass Trail in Yellowstone National Park

Yellowstone National Park, WY · MT · ID

Bliss Pass Trail

A 20.5-mile pass traverse links Slough and Pebble Creek valleys.

Length
20.5mi
Time
12hr
Elev. change
3,136ft
Difficulty
Challenging
  • No dogs
  • High point 9,400 ft

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Slough Creek Trailhead

Overview

About Bliss Pass Trail

Why go

  • A true pass traverse connects two remote creek valleys.
  • High-country switchbacks open to broad mountain views.

Heads up

  • The one-way route needs a shuttle or multi-day plan.
  • Rocky pass-side footing and creek fords can be demanding.

Map & elevation

The route

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Full map
Elevation6,263–9,400 ft
TrailheadSlough Creek Trailhead (2K5)44.94356, -110.30819
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Plan your hike

Before you go

Parking

Begin at Slough Creek Trailhead (2K5) on Slough Creek Road; the lot has abundant parking, including horse-trailer spaces. The route ends at Pebble Creek Trailhead (3K2), where parking is limited; additional parking and vault toilets are at Pebble Creek Campground. In winter the Slough Creek gravel road is closed to vehicles; park near the vault toilets by the main road and ski or snowshoe in. Arrange a shuttle between trailheads.

Safety

Steep, rocky pass-side switchbacks and multiple Pebble Creek fords; snowmelt can raise the water. Bears frequent this area, and moose are present near Slough Creek. Pets are prohibited on trails and in the backcountry. Overnight trips require a year-round permit for designated campsites.

5 active Yellowstone alerts

  • ClosureBiscuit Basin closed after hydrothermal explosionBiscuit Basin’s parking lot, boardwalk, and Firehole River are closed to all travel.Official details
  • ClosureMost Yellowstone roads close to regular vehicles November 1Most Yellowstone roads and the West, South, and East entrances are scheduled to close to regular vehicles November 1, 2026, as the park prepares for winter operations.Official details
See all 5 alerts
A park ranger sits on a dash-mounted phone, talking, as Parkwolf’s Tour Guide plays “Army Cutworm Moths: A Grizzly Bear Buffet” on Grand Loop Road below Dunraven Pass in Yellowstone
Parkwolf Tour GuideThe highest, rockiest slopes around here are a summer buffet for grizzly bears.

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Recorded for this trailhead

Slough Creek Trailhead
0:00 / 0:20
“Slough Creek's trailhead is coming up, the start of an old wagon road into open meadow country. I'd make the first meadow your turnaround, allowing two to five hours for the out-and-back.”

Plays as you drive up to this trailhead in the Parkwolf Yellowstone Tour Guide.

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Trail guide

Hiking Bliss Pass Trail

What the route isBliss Pass Trail is a 20.

Bliss Pass Trail is a 20.5-mile, one-way backcountry traverse from Slough Creek Trailhead (2K5) to Pebble Creek Trailhead (3K2). It links the open Slough Creek valley with upper Pebble Creek over Bliss Pass; the mapped route runs east from Slough to Pebble and does not return to its start. Allow about 12 hours on foot and arrange a shuttle, or plan an overnight itinerary around permitted campsites.

From Slough CreekThe route begins with roughly six mostly level, open miles through Slough Creek Valley before…

The route begins with roughly six mostly level, open miles through Slough Creek Valley before climbing through forest and rocky ground toward the pass. For a much shorter outing from the same access, a 3.4-mile there-and-back reaches the first meadow; it does not cross Bliss Pass.

The high countryThe route climbs to about 2,865 m (9,400 ft) at the pass.

The route climbs to about 2,865 m (9,400 ft) at the pass. Steep switchbacks and rocky footing lead into the upper terrain, where mountain views open across the Absarokas. A trip account describes waterfalls on the slopes and snowmelt mud or lingering snow near the pass; those conditions vary by season. On the east side, the trail drops through rocky slopes, meadow and forest toward Pebble Creek.

Pebble Creek and waterThe upper Pebble Creek stretch includes several fords; one route account records three.

The upper Pebble Creek stretch includes several fords; one route account records three. Snowmelt can raise the water, so check conditions before setting out and be ready to turn back if a crossing is unsafe. Treat natural water before drinking; no potable-water taps were confirmed along the route.

Access and overnight rulesA backcountry permit is required year-round for overnight stays, and each permit specifies…

A backcountry permit is required year-round for overnight stays, and each permit specifies designated campsites and dates. Pets are not allowed on hiking trails or in the backcountry. Bears frequent this area, and moose are also present near Slough Creek. Slough Creek Trailhead has abundant parking, while Pebble Creek Trailhead has limited spaces with additional parking and vault toilets at its campground. The Slough Creek gravel road closes to vehicles in winter; visitors park by the main-road vault toilets and ski or snowshoe to the trailhead.

Wildlife

Wildlife in Yellowstone

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