Welcome to the Big Timber KOA! New ownership as of the 2020 season! With friendly, helpful staff and ongoing improvements and remodeling, we want to make your visit relaxing, rejuvenating and fun!

We are located at I-90 exit 377, on the south side frontage road (same side as the Prairie Dog Town State Park). Filled with beautiful trees and bordered by a lazy Montana creek, the Big Timber KOA is a wonderful spot to come relax and spend time with friends and family. On-site, enjoy our heated pool and jumping pillow, or we have a game room with air hockey and a pool table for evening fun. Our friendly staff is happy to make suggestions if you're interested in a few hours or a day trip to enjoy the beautiful Montana outdoors. We offer free WiFi. We can accommodate rigs up to 110 feet! Our pull-through sites sell out fast, so please call for availability. No RV? Stay in a comfortable cabin or bring your tent for an old-fashioned camping experience. Many local attractions, including Natural Bridge Falls, the Crazy Mountain Museum, and quaint dining and shopping in Big Timber.  Your park host: Jake Klingensmith

Campground Amenities

  • 50 Max Amp
  • 110' Max Length
  • Wi-Fi
  • Pool (5/30 - 9/7)
  • Hot Tub/Sauna
  • Snack Bar ($)
  • Propane ($)
  • Firewood ($)
  • Pavilion
  • Dog Park
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

Big Weekend Care Camps

When: May 9 – 10, 2025

What: Stay at a participating KOA campground on May 9 & 10, 2025, and 50%* of the cost of the site on the second night will be donated to Care Camps!

Why: Your stay will make a difference in the lives of children with cancer, by helping raise funds for medically supervised pediatric oncology camps. These camps help children who have cancer enjoy care-free time focusing on fun, friends, and activities instead of on their illness. Funds raised from Saturday, May 10, will be donated to the Care Camps Foundation, which distributes $2 million annually to support 100+ pediatric oncology camps across the U.S. and Canada. Learn more at koacarecamps.org. * Only valid at participating KOA locations. Applies to one site, for two consecutive nights at the same KOA. Sites may be limited. Only KOA Rewards discounts apply.

Book This Hot Deal

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Local Area

Greycliff Mill

Just 4 miles from the Big Timber KOA, this working water-powered gristmill is housed in a historic timber-frame building alongside a coffee shop serving breakfast and lunch. While you are there, check out the underground Greycliff Market and Creamery, where you can buy local goods and sample cheeses made in their cheese cave. Venture down an 80 foot underground tunnel to see a timber-frame greenhouse with flowers, waterfalls and trout. There are walking trails and swings to enjoy, as well as resident buffalo to visit.

9 Greycliff Creek Ln

Greycliff, MT 59033




Natural Bridge State Park

A 30 minute drive south of Big Timber brings you to Natural Bridge Falls . The paved paths start at the parking lot and meander along the Boulder River. There are several viewing points with signs telling about the area, falls and wildlife. In the spring, there are actually three separate falls. Later in the year, the river flows underground to reveal the limestone bedrock. Toilet facilities and picnic tables are available. A well-maintained dirt trail leads to a scenic point directly across from the falls. For a day hike, continue on the Green Mountain Trail. The terrain will change from grassland to heavy timber. Look for Limber Pine, Lodge Pole Pine, Douglas Fir and wildflowers galore. Deer, bear, elk, and small animals may be seen along the way.


Big Timber Falls at Halfmoon Park

Take 191 north out of town less than 10 miles, then take a left on Wormser Loop Rd.  Enjoy the beautiful drive as you follow Big Timber Creek into the Crazy Mountains. Halfmoon Park is equipped with picnic areas, a parking area for day hikes, and public restrooms.  It's a short and easy hike from the parking area to the majestic Big Timber Falls. For the hardier and more adventurous, Blue Lake is another 5.5 miles up the trail and offers beautiful surroundings and great fishing!


Crazy Mountains

There are several legends as to how they got their name. One of them is that a woman (some say Indian - some say white) went mad on the prairie, possibly due to the death of her family, and took refuge in the mountains. Indian beliefs require that crazy people to be left alone, and so she was.