The UCI Road World Championships were held in Barcelona, Spain in 1973 and contested on the Montjuich circuit. During the road race, Merckx attacked with around one hundred kilometers left. His move was marked by Freddy Maertens, Gimondi, and Ocaña. Merckx attacked on the final lap, but was reeled in by the three riders. It came down to a sprint between the four, of which Merckx came in last and Gimondi in first. Following the road race, Merckx won his first Paris–Brussels and Grand Prix des Nations. He won both legs of À travers Lausanne, as well as the Giro di Lombardia, but a doping positive disqualified him. He closed the season with over fifty victories to his credit.