Yellowstone Shortline and Two Top Loop

The route offers a diverse experience. The Yellowstone Shortline Trail section is an easy, paved asphalt rail-trail with a smooth surface and gentle grades. In contrast, the Two Top Mountain area features more challenging, high-alpine singletrack, often with steady climbs, undulating terrain, and some sections that are decommissioned roads or two-tracks. You'll need to watch for low branches and down trees in the Two Top area.

The Yellowstone Shortline Trail portion is considered easy and very family-friendly, suitable for all bike types and skill levels due to its paved, gentle surface. However, the Two Top Mountain sections are significantly more challenging, rated moderate (blue) with substantial elevation gain and technical singletrack. Combining both creates a varied experience, so beginners might stick to the Shortline Trail, while experienced riders can tackle the full loop.

Access to the Yellowstone Shortline Trail is typically from West Yellowstone. For the Two Top Mountain area, access points are often found near the Montana/Idaho state line on dirt roads. Specific parking areas are usually available at trailheads for both sections, but it's advisable to check local maps for the most convenient starting points depending on which part of the loop you plan to ride first.

The Yellowstone Shortline Trail meanders through the Custer Gallatin National Forest, offering scenic views of Montana's landscape, willow wetlands, and shaded areas. You'll find interpretive signs detailing the area's history and ecology. In the Two Top Mountain area, you'll be treated to panoramic high-alpine views, including the Tetons, Centennial Mountains, Lionhead, and Yellowstone National Park on clear days. The unique 'snow ghost' ice patterns on trees at the summit are also a notable feature. The route also passes by Reas Pass.

Wildlife sightings are common, especially along the Yellowstone Shortline Trail. You might spot moose and coyotes. As this area is part of the Custer Gallatin National Forest, it's important to be aware of larger wildlife like bears. Carrying bear spray is advised for safety.

The best time to ride is typically from late spring through early fall. The high-alpine sections of Two Top Mountain can be snow-covered well into early summer and experience early snowfall in the fall. The Yellowstone Shortline Trail is generally accessible earlier and later in the season due to its lower elevation and paved surface. Always check current conditions before heading out.

This route is primarily within the Custer Gallatin National Forest. Generally, there are no specific permits required for mountain biking on these trails, nor are there entrance fees like those for national parks. However, it's always good practice to check the latest regulations with the US Forest Service or local ranger district before your trip, especially concerning any fire restrictions or temporary closures.

While specific regulations can vary, dogs are generally allowed on trails within the Custer Gallatin National Forest. However, they must be kept on a leash to protect wildlife and ensure the safety of other trail users. Always practice Leave No Trace principles, including packing out all pet waste.

No, motorized vehicles, including e-bikes, ATVs, and dirt bikes, are not permitted on the Yellowstone Shortline Trail. This is a US Forest Service policy for this non-motorized trail, which is also used for hiking, rollerskating, and roller skiing.

Yes, sections of this route intersect with several other trails. Notably, it includes parts of the Greater Yellowstone - Teton Rail Trail, the Yellowstone Shortline Trail, and the CDT - Idaho & Montana Section, which is part of the larger Continental Divide Trail. You'll also encounter smaller segments like Little Snowy Road and various Nfs Route trails.

When combining these two distinct areas, be prepared for a significant change in terrain and difficulty. The transition from the easy, paved Shortline Trail to the technical, high-alpine singletrack of Two Top Mountain requires different biking skills and equipment. Ensure your bike is suitable for both, and be ready for substantial elevation gain in the Two Top area. It's a great way to experience both relaxed scenic riding and more rigorous mountain biking in one outing.