For the past 16 years, Stewart Kohl has ridden the Pan-Mass Challenge (PMC), an arduous 190-mile bike route that traverses the flexing arm of Cape Cod, Mass., to raise money for cancer research at Boston’s Dana-Farber Cancer Institute.
“It’s an incredibly powerful event,” says Kohl, the Cleveland-based co-CEO of The Riverside Company, a private equity firm with more than $3 billion in assets.
While the event offers several routes with mileage varying from 26 to 192, Kohl opts for the longest one. He rides se…