The Chicago Marathon along the lakefront, Downtown Chicago, Illinois, United States of America, North America

photography colour colour image color color image horizontal horizontal image outdoors outside large group of people travel day travel destination travel destinations tourist destination chicago skyline cityscape chicago marathon sporting event running runners lakefront downtown chicago illinois usa us united states united states of america north america american north american lake water architecture architectural modern urban scene urban scenes urban skyscraper real people diminishing perspective vanishing point perspective amateur sport cloud