ACROSS Lexington, is a 40-mile network of marked trails and paths for walkers, runners and bikers that spans the Town of Lexington (Massachusetts). The routes use existing public ways to connect the town center with various historic sites, schools and conservation areas.

The ACROSS Lexington Challenge is to to connect all the marked network in a single run, as efficiently as possible (therefore, people's routes may vary), using the map available at: https://www.lexingtonma.gov/222/ACROSS-Lexington

The Wadhams to Avoca Trail passes through 12 miles of woods and farmland in southeastern Michigan, but it’s the historic railroad bridge over Mill Creek that’s the big draw. Everyone from solo sightseers to participants in charity running events enjoy the breathtaking views 60 feet above the valley in an otherwise flat landscape.

From the Forbes State Forest brochure:

Pine Knob Trail—Just 2 miles long, stretching from the picnic area to Pine Knob overlook. Parallels Lick Run for parts of its length. The elevation changes about 700 feet from its lowest point of 1,440 feet above sea level at the picnic area, to about 2,130 feet at the Pine Knob Overlook. Be prepared for a 4 hour roundtrip. Pack plenty of liquids during summer and warm clothes in the winter.