Man riding mountain bike, Utah, United States

active adventure back lit bicycle bike riding caucasian color image concentration countryside day determination downhill endurance environment exercise forest full length helmet horizontal journey landscape leisure activity lens flare low angle view man mid adult motion mountain bike mountain biking nature one person only men outdoors people photography power recreation remote riding rugged rural scene side view strength sun sunglasses sunny united states utah vacation weekend activities 30's action adventuresome america american americas back lit bicycling bike color colour concentrating cycle daytime entertainment exercising fitness full body glasses hat leisure low angle male mid west movement natural north america one outside person powerful resolution ride rider rural stamina sunshine tough traveling travelling tree trip us usa united states of america us usa ut western european woods