(Editor Note: This is a "pick your own exact path" route, with 5 requested obligatory milestones, plus 5 requested restrictions; see text below).

The Quabbin Reservoir sits in the heart of Massachusetts.  Its surrounding watershed has been protected for the sake of preserving the pristine nature of Boston's drinking water supply.  Four towns were disincorporated during the reservoir's creation and relics of their past are found throughout the forest in the form of stone walls, cellar holes, and ancient hardwoods lining old gravel roads.

Starting from 4WD starting trail of Pos Rekom, hike toward Gunung Chamah, then toward Gunung Ulu Sepat and end at Pos Lelar.

(Note: this route is not to be done alone as the forest has tiger and elephant roaming around.)

Tonto Trail is the longest trail in Grand Canyon National Park, many hikers follow a part of it, but very few hikers follow it entirely. Unlike those trails from rim to river, it runs along the south bank of the Colorado River, mostly on the Tonto Platform. The Tonto Trail officially begins at Garnet Canyon and ends at Red Canyon.  If you have finished R2R2R, Tonto Trail might be your next challenge in the Grand Canyon.