North Dakota

https://www.parkrec.nd.gov/fort-abraham-lincoln-state-park
Scouts Trail system consists of 7 individual trails covering a total of 17.56 miles.
82 modern equestrian campsites, 4 water only equestrian campsites.

https://www.parkrec.nd.gov/fort-ransom-state-park
Choice of 16 unique trails: 20+ miles, overall.
24 modern equestrian campsites, 9 primitive equestrian campsites.

https://discoverjamestownnd.com/fun-things-to-do-in-jamestown-nd/get-outdoors/horse-trails/
9 mile multi-use trail.

https://www.traillink.com/trail/freedom-trail-(nd)/#trail-detail-about
10 mile gravel multi-use trail.

https://www.parkrec.nd.gov/little-missouri-state-park-0
45 miles of equestrian and hiking trails.
83 corrals available, plus campsite options.

11.6 mile out & back trail. March – October.

https://www.parkrec.nd.gov/pembina-gorge-state-recreation-area
21 miles of multi-use, non-motorized trails.

https://discoverjamestownnd.com/fun-things-to-do-in-jamestown-nd/get-outdoors/horse-trails/
5 mile multi-use trail.
Corrals, Trailer sites available.

https://www.traillink.com/trail/roughrider-trail/
16.5 mile multi-use, dirt/gravel trail.

https://www.fs.usda.gov/recarea/dpg/recarea/?recid=79470
8 mile Hankinson Hills trail.
–—https://www.fs.usda.gov/recarea/dpg/recreation/recarea/?recid=80602&actid=104
4 mile Oak Leaf trail.
–—https://www.fs.usda.gov/recarea/dpg/recreation/recarea/?recid=80603&actid=104
30 mile North Country National Scenic trail.
—-https://www.fs.usda.gov/recarea/dpg/recreation/recarea/?recid=80598&actid=104

https://www.parkrec.nd.gov/sully-creek-state-park
144 mile Maah Daah Hey trail. Contains 8 unique trail segments.
Access trail just NW of park entrance.
6 modern equestrian campsites w/corral access.
10 modern group equestrian campsites.

https://www.ndtourism.com/articles/saddle-horseback-riding-north-dakota-style
80 miles of marked horse trails.
Group horse campground is available.

https://www.parkrec.nd.gov/turtle-mountain-state-recreation-area
10 miles of multi-use horseback riding trails.