As an 18-year-old, Rochard surprisingly won the 5000 m in the 1931 national dual meet between France and Britain, running 15:11.8.[4] Later that summer, he also won in a dual meet against Germany, this time running 15:03.6.[5] His best time that year was 15:01.6, which he ran in Paris on 25 October,[3] but in that race he was defeated by Poland's Janusz Kusociński, who went on to win Olympic gold at 10,000 metres.[6]
In 1932 Rochard broke 15 minutes for the first time, running 14:56.8;[3][7] he was selected for the Olympic Games in Los Angeles, where he qualified for the final but did not finish it.[2] In 1933 Rochard improved to 14:46.5 in a dual meet against Finland, only narrowly losing to Finland's Olympic medalist Lasse Virtanen.[7]
At the 1934 European Championships in Turin Rochard was up against Kusociński, Virtanen and Ilmari Salminen, but outkicked them all and won gold by a clear 4.4 second margin.[7][8] His winning time, 14:36.8, was his personal best; he only missed out on the French record, set by Jean Bouin in his duel against Hannes Kolehmainen at the 1912 Summer Olympics, by one-tenth of a second.[7] Rochard was the first French athlete to win gold at the European Athletics Championships,[9] and the only one to do so in the inaugural 1934 meet.[10]
Rochard returned to the Olympics in Berlin in 1936; he again took part in the 5000 m, but was eliminated in the heats.[2] He attempted to defend his European title at the 1938 Championships in Paris, but only placed eighth.[10]
