Claim: Spain at the 1966 European Athletics Championships had less than ten athletes, one of whom was Mariano Haro(born May 27, 1940).
Evidence: Mariano Haro Mariano Haro Cisneros (born May 27, 1940) is a former Spanish athlete, competing in the long-distance events. José Luis Sánchez Paraíso Alberto Esteban Javier Álvarez Carlos Pérez Luis Garriga Ignacio Sola