The Bank of America Chicago Marathon is one of the six World Marathon Majors, held annually in Chicago, Illinois, United States. The race attracts elite runners and amateurs from around the world, offering a flat and fast course through downtown and historic neighborhoods, with thousands of spectators lining the streets.
             
           
                
                    Course Terrain 
                
                
                    The course is predominantly flat and fast, running through downtown Chicago and several distinctive neighborhoods. Surface conditions are road (asphalt and concrete), with excellent crowd support and minimal turns.
                 
            
            
                
                    Elevation Changes 
                
                
                    The course features minimal elevation changes, with an overall elevation gain of less than 100 feet, making it exceptionally fast and suitable for personal bests.