The image shows a large group of people participating in a marathon. They are running on a street with a blue building in the background. The people are of different ages, genders, and ethnicities, and they are all wearing running gear and running shoes. Some of them are wearing numbers on their shirts, indicating that they are participating in the race. There is a sign on the right side of the image that reads "Chicago Fire Department." The sky is clear and blue, and there are trees and buildings visible in the distance.