Barth won the 1959, 1963 and 1964 European Mountain Championships (Hillclimb) for Porsche and also the 1959 Targa Florio.
Barth gañou os Campionatos Europeos de Montaña de 1959, 1963 e 1964 para Porsche e tamén na Targa Florio de 1959.