The first hint of a problem for Harry Zouros came in 2018. The fitness enthusiast who competed in high-endurance races noticed his hands began to shake and his left side didn't feel right.

Still, he traveled to Greece to compete in the Trifecta World Championship Spartan Race, unaware of a diagnosis of Parkinson's disease that awaited him.

On Saturday, Zouros, 52, of Hicksville, was joined by more than 40 friends and supporters at Theodore Roosevelt Memorial Park in Oyster Bay for Moving Day Long Island , a one-mile walk and fundraiser for the Parkinson's Foundation.

Zouros and his supporters wore matching T-shirts that featured a photo of his head taken at the 2018 Spartan Race placed on a Spider-Man body. Underneath it read, "The Adventures of Peter Parkinsons."

"When I put my

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