Caucasian runner in starting position on sports field

25 29 years authentic authenticity caucasian color image copy space exercise field fitness full length health horizontal low angle view low section missouri night one person outdoors people photography physical fitness real people runner saint louis selective focus sports sportswear starting position stretching track & field united states woman working out young adult young women millennial20 25 20 30 20's 20s 25 30 activity adult after dark america american americas apparel clothes clothing color colour dark evening exercising exertion female full body full length gal garment hardy healthy human human being lady low angle lower body mid west mo negative space nightfall nighttime nite north america one outdoor outside person self improvement sport track and field track event twenties twenty us usa united states of america us usa vitality well being western european white space women work out workout