marathons Definition

battle of marathon, endurance contest, marathoners, races, competitions, runners, ultramarathon, triathlon, footraces, racewalking, triathlete, miler, endurance, biking, bikila, ironman, carbo loading, jog, sprints, skydive, bloomsday, treadmill, walkathon, mountain biking, mile, treks, walkers, skijoring, bicycling, stairmaster, cycling, couch potato, steeplechase, racquetball, birkie, pub crawl, striders, nordic skiing, kilometer, orienteer, mushing, roger bannister, roller blade, circumnavigation, championships, crosscountry, tournaments, rollerblade, tinman, skiing, stamina, aerobics, waitz, swimming, orienteering, geb, aerobic exercise, cardio, pedalling, mountain biker, kayaking, strenuousness, freestyler, exercisers, cyclists, yoga, alleycat, fartlek, ballroom dancing, etape, mountain bike, lieto, rowing, unicyclist, zatopek, bushiest, festivals, luging, jazzercise, paralympic, kickboxing, carnivals, workouts, jaunts, regattas, hill climb, flatwater, decathlon, fundraisers, shin splints, mount kilimanjaro, racers, calisthenics, powerlifter, trampolining, pageants, joggers, plyometrics, physical exertion, parkour,