Montana is one of those places with boundless outdoor adventure cred. Its high glaciated mountains, broad rivers, welcoming small towns, and rich history have earned it a rightful spot atop the bucket lists of travelers from around the globe. As its nickname implies, Big Sky Country is as vast as it is astounding, and its best-known gems like Glacier and Yellowstone National Parks are just the beginning when it comes to outdoor adventure. In fact, visitors who venture eastward—into rugged badlands, meandering rivers, secluded mountain ranges, and vast prairie—will be rewarded with an unexpected and wholly different kind of Montana experience. The opportunities to fish, hunt, hike, ride, eat, and learn are practically endless. Not sure where to start? Follow one (or all!) of these road trip routes to discover a new side of adventure in Eastern Montana.