Yellowstone National Park – Lamar River Stock Trailhead

Highlights

Big wildlife country, storied backcountry routes, and one of Yellowstone’s most evocative stock trailheads.

Riding

This is a destination for riders who want meaningful backcountry options. The Lamar River, Specimen Ridge, Cache Creek, and Miller Creek routes create a menu that ranges from scenic valley travel to demanding mileage with river crossings and serious exposure. The reward is exceptional atmosphere: large mammals, huge vistas, and the unmistakable feeling that the ride belongs to a bigger wilderness system.

Rideable terrain

33 miles

Trailer parking

There is a large stock-friendly parking lot, but it is popular with horse trailers and can fill quickly. Efficient staging, early arrival, and a clear turnaround plan matter here.

Horse regulations

A free day-ride permit is required for stock day rides in Yellowstone, proof of a negative Coggins test within the last 12 months is required, and overnight riding and camping require permits. Feed, manure, wildlife distance, and food-storage rules all matter and are actively important here.

Getting here

The trailhead has a large parking area and vault toilets, but summer demand is real and horse trips are common. Arrive early, stage with efficiency, and build enough time for the unavoidable Yellowstone variables: wildlife near the road, traffic slowdowns, and the simple fact that the northeastern park feels more remote than many visitors expect.

Planning your visit

Bears, river crossings, weather, insects, and distance are not side notes in Lamar country—they are the trip. Bring bear spray, check current backcountry conditions, and be realistic about horse fitness and rider judgment. When the planning is strong, this is one of the most unforgettable public-land rides in the state.

Where to stay

Overnight stock stays are not for the front-country trailhead or campgrounds, so riders should think in terms of permitted backcountry travel or a separate overnight base outside the immediate trailhead area. In other words, this is not casual horse camping—it is a more committed riding destination, and it feels best when approached that way.