Submitted by Iain Ridgway:

An out and back run along the Monoosnoc Ridge Trail near Leominster, MA.

The NC500 is a route of 516 miles of stunning coastal scenery in the far north of Scotland.the raw and magnificent landscape it traverses has been shaped over thousands of years by geological forces,glaciers and the weather systems of the North Atlantic. Viewed as one of the best road routes in the world by drivers and cyclists,the duration,distance and mountain landscape offers self propelled endurance athletes a perfect challenge.

A 15km loop linking all 3 segments of the Billy Goat Trail with the C&O Canal Towpath.  Great Falls, MD.

The Billy Goat Trail is a 4.7-mile (7.6 km) hiking trail that follows a path between the C&O Canal and the Potomac River within the Chesapeake and Ohio Canal National Historical Park near Great Falls in Montgomery County, Maryland. The trail has three sections: Section A, the northernmost, is 1.7 miles (2.7 km); Section B is 1.4 miles (2.3 km); and Section C, the southernmost, is 1.6 miles (2.6 km)
Billy Goat Trail was laid out by the YMCA Triangle Club in 1919.