"In 2018, this 117-mile rail-trail across northeast Kansas officially became a state park. Formally known as the Flint Hills Nature Trail, the trail's new name is Flint Hills Trail State Park. It links five counties and more than a dozen towns between Osawatomie and Herington. It's the longest rail-trail in Kansas and one of the longest rail-trails in the United States. " more here
Thanksgiving week of 2021 I hiked the eastern 95 miles of this trail alone over three days. If you're viewing on a mobile device, you'll want it in landscape orientation.