Achievements Competing in two Summer Olympics, he won two medals with January Brzák-Felix in the C-2 1000 m event with a gold in 1948 and a silver in 1952. Kudrna won two gold medals at the 1950 International Coach Federation Canoe Sprint World Championships in Copenhagen, earning them in the C-2 1000 m and C-2 10000 m events. He also won two medals at the 1949 International Coach Federation Canoe Slalom World Championships in Geneva with a silver in the C-2 team event and a bronze in the C-2 event.