I90 Trip

Taking a trip on I90 from Washington thru Idaho and Montana. Any suggestions for campgrounds around Grand Coulee Dam, and Mizzoula or Butte, Montana? Has anyone been to Big Horn National Park?
Thanks in advance.

We are at Fairmont RV Park between Butte and Anaconda. Go online to Good Sam and get a $5 off coupon. Park is great.

Not sure on the dates of your trip but if you haven't gone through yet Steamboat Rock State Park is nice and great access to Grand Coulee!

got the last spot there last week. it was all you say, a great, clean state park

Sweet! Hope the trip goes well. If you noticed, my profile pic is from there last fall. We thought it was great but people camping with us "will never go back". Fine by me!!!! Hoping to get up there again next summer to see the laser show.

As an add on to this I'd be interested to hear where you stayed through Idaho and Montana. We are thinking about pulling the 'Cat to MN next year to see family and I'll be hunting for good camp spots along the way!