[1] Born in Wielichowo, Greater Poland Voivodeship, Krzyszkowiak won 13 Polish National Championship titles in long-distance and cross-country events.

[2] Krzyszkowiak rose to the international athletics scene at the 1956 Summer Olympics, where he missed the bronze medal in the 10,000 metres by 7.4 seconds, finishing fourth.

In 1958, he became the first winner of the European Sportsperson of the Year conferred by the Polish Press Agency.

[3] Just two months before the Rome Olympics, Krzyszkowiak ran his first world record, clocking 8:31.4 in the 3000 m steeplechase.

After the Olympics, Krzyszkowiak decided to concentrate on the 3000 m steeplechase event, running his second world record in 1961, but was forced to retire from sports prematurely in 1963 due to injuries.