Yvetta Hlaváčová, 6'5"
Yvetta Hlaváčová (born 26 May 1975) is a Czech national team member in long-distance swimming and women's world record holder from swimming the English Channel in a time of 7 h, 25 mins.
While she has pursued indoor swimming, she has earned much more success on the open water. The swimmer has been at the top of long-distance swimming for several years.
At 6ft4.5" (194 cm) she is one of the tallest swimmers in the world. Her feet are a whopping size 13 (US) / 46 (EU).
Source: Wikipedia