Mirna van der Hoeven explained

Birth Date:1948 5, df=y
Birth Place:The Hague, the Netherlands
Height:1.75m (05.74feet)
Weight:63kg (139lb)
Sport:Running
Club:Olympia '48, Den Haag
Show-Medals:yes

Hermina Johanna van der Hoeven-Jansen (better known as Mirna van der Hoeven, born 8 May 1948) is a retired sprinter from the Netherlands. At the 1968 Summer Olympics, she finished second in the 400 m in the semifinal, setting her career record at 52.69 seconds. However, she slowed down to 53.0 s in the final and finished last. The same year she won the Amateur Athletic Association of England Championships in the same event.