Remembering that climbing routes are more like marathons than sprints might remind you to breathe and take rests on the best holds. Beginners have a hard time resisting the urge to take a deep breath at the start and not exhale until they reach the anchors, while more experienced climbers hang on their projects looking for the best holds for quick shake-outs. One thing both of these climbers have in common is Sterling's Marathon Pro Dry Single Rope. It has the beefiest sheath out of any Sterling rope, and that appeals to both beginners and experienced climbers alike. Beginners will appreciate the friendly handling while mastering belay devices, and experienced climbers can admire the long-lasting durability on the proj.