This is a fundraiser for True North Ranch Ministries (truenorthranch.org). The ride is located at Rice Creek Hunting and Recreation in Little Falls, Minnesota, on 1700 acres of private land. The trail/obstacle course will be approximately 7 miles long.
This is an Equine Trail Sports competitive event, although you can also choose to just ride along. You can register here: https://www.equinetrailsports.com/event_group/12830/view
Here is a video that shows you some of the land you'll be riding/parking/camping on: