1 20 20-30 20s 25 25-30 30 achievement achieving activewear adult adults ambition ambitious and appearance assertive assertiveness athlete athletes barrier barriers being beings blur blurred building buildings built caucasian caucasians challenge challenging clothes clothing color colour competition competitive copy course day daylight daytime endurance european exercise exercising female females field fields focus foreground grown-up grown-ups grownup grownups head human humans image incentive leg legs location low motivating motivation motivations of on one only orange outdoor outdoors part partial people person persons photo photography photos race racetrack runners running section self-assertion shoe shoes shot shots shoulder shoulders space spain sport sports sportsman sportsmen sportswear sportswoman sportswomen stadium stadiums stand standing structure structures success successful the to track tracks train training view wall walls wear woman women years young