The trek began in 2003, when 16 cyclists pedaled from Boston to New York and raised about $30,000 for ALS research. The event has since grown to 260 riders, raising more than $2.64 million, according to the Tri-State Trek website.
Cyclists will cross the New York border into Lewisboro Sunday morning on Route 35 on the Old Post Road. The route turns onto Route 121 into Pound Ridge and Bedford, followed by Greenwich Road, Bedford-Banksville Road in Armonk, Route 22 and finally left onto Route 433.
Spectators are encouraged to cheer the cyclists along the route.
The Tri-State Trek, which is raising money to benefit the ALS Therapy Development Institute, begins its three-day journey Friday in Newton, Mass.
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