Big Timber / Greycliff KOA
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Want to camp but don't own an RV? You can stay in our cabins, kottage or NEW studio lodge.

We are located next to I-90 at exit 377. Grandpa and Grandma will love this easy-access campground on the southwest side of I-90, Exit 377. Mom and Dad can enjoy the adults-only hot tub, and kids always love the heated pool and Jumping Pillow. The campground has plenty of trees to keep you cool. But if you prefer sunshine and a satellite signal, there is a spot for you too. This KOA offers free WiFi. no rig is too big or small; the campground can accommodate up to 110 feet, but please call for availability. No RV? Stay in a fantastic Cabin or bring your tent for an old-fashioned camping experience. Check out the many local attractions, including Natural Bridge Falls and Crazy Mountain Museum. You can also hike, fish and ATV in the area. This KOA's friendly staff welcomes old and new friends. Pool: May 30 - September 5. Max pull thru: 110 feet. Your host: Jake Klingensmith

Accent Photo

Campground Amenities

  • 50 Max Amp
  • 110' Max Length
  • Wi-Fi
  • Pool (5/30 - 9/7)
  • Hot Tub/Sauna
  • Snack Bar ($)
  • Firewood ($)
More About Amenities

Ways to Stay

KOA Journey

KOA Journey Campgrounds

KOA Journey campgrounds are the perfect oases after a day on the road. Whether it’s along the way or a quick getaway, they’ve got you covered. Located near the highways and byways of North America with long Pull-thru RV Sites, they deliver convenience to the traveling camper. Pull in, ease back and take a load off.

KOA Journeys Feature:

  • Pull-through RV Sites with 50-amp service
  • Premium Tent Sites
  • Well lit after hours check-in service

Latest Hot Deal

VKR Appreciation Weekend

VKR Appreciation Weekend Photo WHEN:  September 13, 2020 - September 18, 2020

WHAT:  Value Kard Rewards holders stay as a paying guest on Friday, September 18 at any participating KOA campground and get Saturday, September 19 for FREE*.

WHY:  VKR Appreciation Weekend is designed exclusively for Value Kard Rewards holders to say thanks for your loyalty and for trusting your camping memories to us. On this late-summer weekend, we gather to celebrate friends, family and fun in the great outdoors we all adore.*Only at participating KOA locations. Applies to one-site per a VKR account, for two consecutive nights at the same KOA. Sites may be limited. Not valid with other discounts.

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Local Area

Crazy Mountain Museum

The Crazy Mountain Museum is the place to go to discover the rich history of the Big Timber area. It has permanent display of a one room schoolhouse, a Norwegian Stabbur and artifacts, and a model of Big Timber in 1907. Other Seasonal exhibits include Cremer Rodeo exhibit, sheep and wool, Pioneer Memorial Gallery, and the Crazy Mountains. The museum can be found at Exit 367 on Cemetery Road. It is open Memorial Day to Labor Day from 1:00 - 4:30p.m. Tuesdays - Sundays, no charge.


Yellowstone Fish Hatchery

The fish hatchery is a short stroll from down town Big Timber. A biologist is usually on hand to explain the life cycle of the Yellowstone Cutthroat Trout. The Fish can be seen at all stages, from fingerlings to mature breeding stock. Enjoy a tour of the facility and watch the larger trout in the outside pools. Children and adults alike will enjoy this Montana State Fish Hatchery.


Prairie Dog Town State Park

Located off I90 at exit 377, is a town inhabited by the notorious Prairie Dog. Loved and hated by westerners, these perky, burrowing creatures can be seen from spring to fall and on warm days in the winter. The town is easily accessible with informational signs and a picnic area. Get out, walk through the town and take pictures. Please watch for snakes and don't feed the residents.


The Yellowstone and the Boulder River

These are two of Montana's finest trout fishing rivers. Get away for a day of fishing on your own, or we will help you locate a guide.


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