Four teenage boys are starting a interval run down a tree lined dirt path in a local park.

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Size: 3618px × 2491px
Photo credit: © WoodysPhotos / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 10k, 5k, action, aerobic, athlete, athletics, boys, cardio, country, cross, dirt, endurance, exercise, field, fitness, fun, green, group, healthy, high, interval, jogging, lifestyle, lined, marathon, motion, outdoors, pacing, park, path, runners, running, school, speed, sports, team, teenager, timed, track, trail, training, tree, workout, young