The Hundred Mile Wilderness on the Appalachian Trail is one of the most challenging and rugged backcountry stretches of singletrack you can find in New England.

The Loyalsock Trail is the ultimate long-run goal for any distance trail runner in Pennsylvania - or the Northeast, for that matter. Blazed with 2x6" yellow markers, the 60ish mile-long trail tours some of the most remote corners of Pennsylvania and includes an endless selection of stunning views overlooking a mountain gorge, and numerous creeks and waterfalls that feed it.

Just across the river from Brattleboro, Vermont, this is one of the top hidden gem trail runs you will find anywhere in New England. Steep doubletrack joins into remote backcountry singletrack as it circles the stunning and serene Indian Pond, then the circuit ends with a quad-busting and demanding descent down the infamous Mine Ledge Trail.

Blue Marsh Lake is an epic and long trail run in a very unsuspecting corner of Pennsylvania. With southern trailheads less than 15 minutes from Reading and northern access points less than 20 minutes from Interstate 78, Blue Marsh is a staple run for locals and an excellent option even if you're traveling through.

This is hands-down the most epic trail run in the Adirondacks, if not the entire state of New York. Of course, the infamous Devil's Path in the Catskills would be considered a close second. The route encompasses the official "Great Range," including the required out-and-back spurs to Mounts Haystack and Marcy.

The Presidential Traverse is the single most epic way to experience the White Mountains of New Hampshire—including the highest point in New England, Mount Washington. Mostly above the treeline, this traverse offers stunning high mountain views while summiting all of the peaks in the Presidential Range. Whether you're hoping to thru-hike, fast-pack, or run, this is an incredibly challenging undertaking that should not be done alone.

The Vermont 100 covers 100 miles of country roads and forested trails, with "breathtaking views of the southern Green Mountains" the entire way, according to Vermont100.com. The route is constantly climbing and descending "unrelenting rollers that add up to 17,000 feet of climbing."

The Devil's Path is one of New York's most acclaimed hiking trails—some would even argue that it is the best in the Catskills. High peaks are only earned through arduous climbs, and the descents follow fall lines. Expect to need three points of contact at many points and know that there are no "easy" portions along the route.

A beautiful loop around Pico Mountain to run, hike, or spend the night.

Located deep in the Appalachian Mountains lies this incredible, lesser known 80-mile hiking trail. Commonly referred to as the SST, the Standing Stone Trail provides an incredible thru-hike or run with endless options for day trips to rocky vistas and unique rock formations. The trail is also part of the 1,800-mile long Great Eastern Trail, an alternative route to the Appalachian Trail.