Vanninen never won a Finnish title, but won the 50 km race at the Lahti Ski Games in 1946 and 1948 and at Ounasvaara in 1946 and 1947.
Despite not winning any Finnish titles, Vanninen achieved victory in the 50 km race at the Lahti Ski Games in both 1946 and 1948, and also at Ounasvaara in 1946 and 1947.