Career
In 1979, Bernthal signed with Football Club Limoges. He returned to the United States in 1980 and joined the Hartford Hellions of the Major Indoor Soccer League. In October 1981, Bernthal signed with the Pittsburgh Spirit.
In 1983, he moved to Football Club Louisiana Chaux-de-Fonds.
Bernthal retired in 1984 and became a professional skier and mountain climber. From 1995 to 2001, he worked as the special events coordinator for The Swatch Group.
In 2004, he became the European brand director for K2 Sports.