The very next year, Dutrow’s stable won a then world-record 352 races. Reid learned enough from the master that he took out his trainer’s license in 1976 , Fifteen years later, Mark Reid Racing Stables had 140 horses as owners gave him horses because he did what they wanted to do _ win.
Reid’s stable was a regular in the national top 20 and, in 1991, he was fourth in the nation in wins. He was the leading trainer at 12 different race meets. When he retired, he was the all-time leading trainer at Keystone/Philadelphia Park and Garden State Park.
If Reid had chosen another career at that point, he would still have been considered an overwhelming success in horse racing. However, he stayed in the game, turned to buying and selling horses for clients who would be thrilled with his recommendations.
With a special eye for a horse, he bought one of the great horses of his generation, Medaglia d’Oro. He also purchased You, Spoken Fur, Midas Eyes, and many stakes winners. He managed the career of 2005 Horse of the Year Saint Liam for Mr. and Mrs. William K. Warren.
In 2005, Reid purchased Walnut Green with partners Tony Dutrow and Jim DiCicco from Richard and Russell Jones. WG has produced many outstanding horses, including 2011 Kentucky Oaks winner Plum Pretty who was bred, born and raised at Walnut Green.