The TCS London Marathon is one of the world's most prestigious marathons, held annually in London, United Kingdom. It attracts elite athletes, charity runners, and amateurs from all over the globe, following a route through iconic London landmarks including Buckingham Palace, Tower Bridge, and the River Thames.
             
           
                
                    Course Terrain 
                
                
                    The course is mostly flat and paved, traversing central London streets and passing through well-known areas such as Greenwich, Canary Wharf, and the City. The terrain is ideal for both elite competition and mass participation.
                 
            
            
                
                    Elevation Changes 
                
                
                    The elevation profile is considered very flat with minimal elevation changes, making it a fast course suitable for personal bests.