Runners training on mountain trail

20 24 years 30 34 years 50 54 years athlete blue sky caucasian cloud color image countryside day effort endurance environment exercise fitness front view full length jogging low angle view man mature adult mid adult motion nature outdoors people photography racing recreation remote runner running salt lake city three people together trail training triathlete utah vertical woman young adult 30's america american americas color colour daytime entertainment exercising exertion female full body health low angle male mid west middle age middle aged movement natural north america outside person race rural sky speeding sport stamina three togetherness twenty us usa united states us usa ut western european