In the mid-1960s, Koxeder was a pusher in pilot Erwin Thaler 's bobsleigh . During his first important international outing, he won the bronze medal at the 1963 Bobsleigh World Championship in Igls, together with Thaler, Josef Nairz and Reinhold Durnthaler . He achieved his greatest success the following year. At the 1964 Winter Olympics in Innsbruck, his hometown, he won the silver medal with Thaler, Nairz and Durnthaler behind the four-man bobsleigh of the Canadian Vic Emery . In 1965 in Cortina d'Ampezzo and 1966 in Garmisch-Partenkirchen , the Thaler / Koxeder doubles won the European championship in the two-man bobsleigh. It was the first European bobsleigh championships since the first and only event in 1929 . Even in the four-man game, he was able to win a medal at the first ever event at a European Championship in Igls in 1967 . With Thaler, Durnthaler and Herbert Gruber , he won the silver medal behind the Romanian large bobsleigh driven by Ion Pantaru .