Harriman State Park sits along the Henry's Fork of the Snake River in the Greater Yellowstone Ecosystem at 6,135 feet. The park offers 10 overnight sites including group accommodations and rental cabins/yurts, plus 22 miles of trails through meadows and forest. Fees range from $7 to $50 per night. No overnight tent camping is allowed.
Historic ranch-turned-park offering rustic cabins and yurts for rent and a group site; reports indicate overnight tent camping is not allowed.
Historical Significance
The park preserves the former Railroad Ranch, a retreat built by wealthy Union Pacific Railroad investors and mining families. Many original ranch buildings still stand. The Harriman family and other donors later facilitated the transition from private ranch to public park. Seasonal tours of the historic structures run in summer.Weather and SeasonsThe park is open May 1st to November 30th, with summer offering the best conditions. Daytime highs reach the 60s to 70s°F in summer with cool nights, ideal for fishing hatches and float trips on the Henry's Fork. July and August bring the heaviest crowds. Trails turn muddy after rain, and mosquitoes are common seasonally. Winter transforms the park into groomed cross-country ski and snowshoe terrain with temperatures around 20°F, though winter access and services are limited compared to summer.
ElevationThe park's varied terrain offers diverse ecosystems and stunning vistas across the Greater Yellowstone region.
Natural Features and SceneryThe park's flat terrain follows the Henry's Fork through riparian zones, wildflower meadows, and aspen groves. Several small lakes dot the landscape, connected by the trail network. Wildlife is abundant. Moose, trumpeter swans, sandhill cranes, eagles, and elk move freely through the area, wandering in from adjacent Yellowstone. The river itself is crystal-clear and known for exceptional trout habitat. Views extend across open grasslands toward surrounding peaks.
Geological RegionGreater Yellowstone Ecosystem
Scenic ViewsOutstanding views with close proximity to Yellowstone National Park and nearby lakes (Hebgen Lake, Henry's Lake) and the Madison River; trails often run along lakeshores and river corridors.
Lodging & AccommodationsThe park offers various lodging options, including historical cabins, bunkhouses, and premium yurts. "Stay in the original farmhouse or the bunkhouse," one review noted. The yurts received positive reviews, with one visitor stating, "It was great! Stayed in the Becker Yurt overnight." The Milk Barn, Carriage Barn, and other historical buildings are also available.
Programs & ActivitiesThe park hosts various cultural and educational programs, including Moonlight Serenades, Halloween activities, and elk bugling events. "Those who manage Harriman State Park have done a wonderful job in creating activities," one reviewer emphasized.