Miriam Alonso

Miriam Alonso Manteca (born 6 June 1970 in Ulm, West Germany ) 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).