Between 1828 and 1867, Fort Union was the most important fur trade post on the Upper Missouri River. Here, the Assiniboine and six other Northern Plains Tribes exchanged buffalo robes and smaller furs for goods from around the world, including cloth, guns, blankets, and beads. A bastion of peaceful coexistence, the pos
Free — you won’t need your pass here.
Free entry — there is no entrance fee here, so you won’t need your pass to get in.
- Fee type No fee — No fee is charged here.
- HoursHours are in the Central time zone.
- Source National Park Service ↗
- Last verifiedJuly 6, 2026 · Confirmed
- Official pagewww.nps.gov ↗
- Contact 7015729083 · fous_socialmedia@nps.gov
Located on North Dakota Highway 1804 right at the Montana and North Dakota state line. From Williston, ND, approximately 25 miles to the southwest via ND Highways 2 & 1804. From Sidney, MT, approximately 25 miles to the northeast, via MT Highways 200 & 58. Commercial flights and rental cars are avai
Common questions
Quick Yes / No / Depends answers for Fort Union Trading Post National Historic Site — always confirm with the managing site before you go.
No Is there a fee at Fort Union Trading Post National Historic Site?
No — it’s free to enter, so you won’t need your pass to get in.
Yes Can you kayak, paddle, or boat here?
Yes — there’s water for boating and paddling at Fort Union Trading Post National Historic Site. Hand-launched craft usually need no permit; motorized boats may need registration or a launch fee.
Yes Are there hiking trails?
Yes — trails here include River Path Trail. Check length and difficulty before you go.
Depends Can you bring a dog?
Usually only leashed and in developed areas, campgrounds, and paved paths — not on most trails or in buildings. Pet rules vary by park, so check first.
No Are drones allowed?
No — launching, landing, or operating drones is prohibited on National Park Service land.
Depends What are the hours?
Hours are in the Central time zone.
Nearby sites
Masterhatch / CC BY-SA 4.0 · Wikimedia Commons U.S. Fish & Wildlife Service Lake Zahl National Wildlife Refuge
CheckThis U.S. Fish and Wildlife Service site may charge a fee your pass covers — confirm before you go.
NPS Photo / Mark Meyers National Park Service Theodore Roosevelt National Park
ConfirmedYour pass covers the $30 park entrance fee.