Man mountain biking on mountain track

mountain mountain bike mountain biking nature transportation bicycle landscape hill leisure sport competition motion challenge cycling speed solitude fun loneliness recreational pursuit extreme terrain healthy lifestyle riding dirt track horizon over land one young man only bike mountain range ridge vertical outdoors day fitness active 25 29 years one person full length male caucasian ethnicity alone approach cycle scenery view rivalry solitary solitariness amusement lonely youngster man daytime activeness activity one person only