The Madison Arm Loop dy-logo-cropped Previous Next Place Categories: OH/ATV Snowmobile Trails InformationPhotosThe Madison Arm Loop is located north and west of West Yellowstone and is 20 miles in length. This could easily be considered the most relaxing ride of the trails in the Yellowstone area. The trail is well maintained and usually provides great wildlife viewing opportunities. Another good trail for beginners, the 20-mile Horse Butte Loop, travels the shores of Hebgen Lake and some of the best ice fishing in Montana. Trail Condition Groomed Trail Features View Lake River/Stream Trail Surface Dirt Highest Elevation feet Elevation Gain feet Roundtrip Distance miles Organization Hebgen Lake District of the Custer-Gallatin National Forest Website Phone: (406) 823-6961 dy-logo-cropped Previous Next