| Birth Date: | 6 June 1970 |
| Birth Place: | Ulm, West Germany |
| Height: | 1.68m (05.51feet) |
| Weight: | 52kg (115lb) (1996) |
| Sport: | Track and field |
| Event: | 400 metres hurdles |
| Club: | Sol Fuerza |
Miriam Alonso Manteca (born 6 June 1970 in Ulm, West Germany[1]) is a retired Spanish athlete who specialised in the 400 metres hurdles. She represented her country at the 1996 Summer Olympics, as well as three consecutive World Championships, starting in 1993.
Her personal best in the event is 55.45 seconds (Monachil 1996).
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1986 | World Junior Championships | Athens, Greece | 12th (sf) | 400m hurdles | 62.21 | |
| 1989 | European Junior Championships | Varaždin, Yugoslavia | 7th | 400 m hurdles | 60.08 | |
| 8th | relay | 3:42.47 | ||||
| 1990 | European Championships | Split, Yugoslavia | 23rd (h) | 400 m hurdles | 58.35 | |
| Ibero-American Championships | Manaus, Brazil | bgcolor=silver | 2nd | 400 m hurdles | 59.20 | |
| 1992 | Ibero-American Championships | Seville, Spain | bgcolor=silver | 2nd | 400 m hurdles | 57.01 |
| 1993 | Mediterranean Games | Narbonne, France | 4th | 400 m hurdles | 58.06 | |
| World Championships | Stuttgart, Germany | 29th (h) | 400 m hurdles | 58.62 | ||
| 12th (h) | relay | 3:38.61 | ||||
| 1995 | World Championships | Gothenburg, Sweden | 17th (h) | 400 m hurdles | 58.36 | |
| Universiade | Fukuoka, Japan | 8th | 400 m hurdles | 57.34 | ||
| 1996 | Olympic Games | Atlanta, United States | 22nd (h) | 400 m hurdles | 56.53 | |
| 1997 | Mediterranean Games | Bari, Italy | bgcolor=silver | 2nd | 400 m hurdles | 55.89 |
| 3rd | relay | 3:31.93 | ||||
| World Championships | Athens, Greece | 14th (sf) | 400 m hurdles | 55.49 | ||
| Universiade | Catania, Italy | 6th | 400 m hurdles | 57.32 | ||
| 2001 | Mediterranean Games | Radès, Tunisia | 7th | 400 m hurdles | 59.84 | |
| 4th | relay | 3:43.14 | ||||