Men mountain biking on mountain track

mountain mountain bike mountain biking nature transportation bicycle landscape tree hill leisure sport competition motion challenge cycling speed safety fun recreational pursuit extreme terrain healthy lifestyle riding only mid adult men dirt track footpath cycling helmet clear sky horizon over land salida vertical outdoors day fitness active 30 34 years two people 35 39 years full length male caucasian ethnicity altitude safety helmet bike cycle scenery view rivalry safe amusement men males people daytime activeness activity