A six time national champion of the javelin throw event, he became the first Hungarian to break the 60 metres barrier in 1922, and the first sportsman from Vas County to participate at the Olympic Games in 1924.

[1] After the Olympics Csejthey moved to Vasvár and later to Csorna, concentrating on his civil life and work as a health officier and dentist.

His father died in an accident in 1904, whereupon the eldest brother, Viktor, became the head of the household and managed the education of Lajos, sending him to the Medical University of Budapest.

[2] At the height of 1.98 metres (6 ft 6 in) Csejthey was reckoned a real giant of that time and his attributes allowed him to become a successful throwing athlete.

The work of sculptor János Blaskó was revealed by multiple Olympic medalist javelin thrower Gergely Kulcsár.