The Mendon Foundation’s 14th annual Black Diamond Express 5K and Half Marathon races will be run on Sunday August 24, 2025. As always the races will take on the Lehigh Valley Trail in Mendon, New York. All proceeds go directly to the Mendon Foundation which has been providing and maintaining green spaces for the Town of Mendon and surrounding communities for over 30-years. Race registration is now open. Cash and gift prizes will be awarded.