In the 14th German Swimming Championships in 1897, he became German champion in the 100 m freestyle. At the Olympic Games in Paris in 1900 when he came in the 1000 - meter freestyle competition and over 200 m each obstacle to second place. Four years later he was the only official participants of Austria at the Olympic Games in St. Louis, where he again was able to win bronze over 440 yards freestyle. Wahle also hired a new European record in the 200m freestyle on ( 3:08,4 minutes)
Later he emigrated to the United States, and lived until his death in New York City. He was also friends with the float Ruberl Karl, who also came from Austria and emigrated to the United States.
In 1996 he was inducted into the Hall of Fame of the international swimming sport.