'Legs' star stops short, takes a minute (7), 7 letters
Asset for the long haul, 7 letters
Capacity to endure strain, 7 letters
Consider it a man's endurance, 7 letters
Intestinal fortitude, 7 letters
It can keep you going, 7 letters
It helps you go the extra mile, 7 letters
It's a man of endurance, 7 letters
It's needed to finish a marathon, 7 letters
Marathon runner's need, 7 letters
Marathoner's quality, 7 letters
Target of some herbs and pills, 7 letters
The stuff that marathoners are made of, 7 letters
Triathlete's quality, 7 letters
Triathloner's quality, 7 letters
Ultramarathoner's need, 7 letters
Workhorse's quality, 7 letters