[2] Allis stayed to race in Europe when his teammates returned to the United States, signing on as a category 1 amateur with the Paris club, AC Boulogne-Billancourt (ACBB).
Despite the skepticism of French cycling enthusiasts, who informed him that Americans were biologically unfit to compete, Allis did achieve victories, including Paris to Cayeux-sur-Mer in 1964.
[3] The team was so surprised to see their American rider win that they had to scramble to find him a clean jersey to wear on the podium; he had been given the worst one in the shop.
After placing fourth in trials in Central Park, he was selected for the men's individual road race,[4] but was under academic probation and the school almost declined to allow him to attend.
[2] As of 2005, Allis lived in Belmont, Massachusetts, where he was a partner at a local bike store, and had been working with the Harvard University cycling team for over 20 years.