Antonio Fabián Silio Alaguire (born 9 May 1966) is a retired long-distance runner from Argentina. He competed in three editions of the World Championships in Athletics (1991 to 1995), racing in the 10,000 metres. His best result was 8th in 1993. He also finished in the top six of three World Half Marathon Championships (1992, 1993, 1998), finishing second in the inaugural World Half Marathon Championships in 1992.^[1]

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Antonio Silio

Personal information
Born	9 May 1966 (1966-05-09) (age 57) Nogoyá, Entre Ríos, Argentina
Medal record Men's Athletics Representing  Argentina World Half Marathon Championships 1992 Tyneside Half Marathon Pan American Games 1991 Havana 5,000 m South American Games 1986 Santiago 5,000 m

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He won the bronze medal in the men's 5000 metres at the 1991 Pan American Games in Havana, Cuba. He finished second in the 10000 metres at the 1994 World Cup, held at Crystal Palace, London, and won the 1995 edition of the Hamburg Marathon, clocking 2:09:57.^[1]

Prior to his career in track and road running, he competed in cross country and won medals at the South American Cross Country Championships. He won a silver in 1987, the gold in 1988 and a bronze in 1989.^[2]