group four friends in helmets riding bikes on a forest path

20s 30s active activity adults adventure african american autumn backpack bicycle biking black bonding caucasian copy cycling diversity enjoying ethnicity exercising fall forest four free friends friendship front group happy health helmet hispanic hobbies holiday horizontal leisure length lifestyle men millennials mixed mountain multiethnic native nature outdoors path people person protection quarter race rucksack safety space three time togetherness tranquility vacation view women young