Nashua was the betting favorite to win the 1955 Kentucky Derby but was beaten by the second choice, Swaps.[3]
In the 1955 Preakness Stakes, second leg of the Triple Crown, Swaps did not run and Nashua won by a length over a surprisingly strong challenge by Marion duPont Scott's colt, Saratoga. Nashua's time of 1:54 3/5 for the mile and three-sixteenth race on dirt broke the Pimlico track record.[4]
Swaps did not run in the Belmont Stakes and Nashua, the overwhelming choice of the bettors, romped home nine lengths ahead of his nearest rival Blazing Count with Porterville another five and on-half behind them.[5]
Following the killing of William Woodward Jr., the Belair Stud horses were auctioned off. In 1955, a syndicate purchased Nashua for a record $1,251,200 from the Woodward estate, with majority interests owned by Christopher J. Devine (senior partner and founder of C.J. Devine & Co.);[8] Leslie Combs II; and John Wesley Hanes II, an Under Secretary of the Treasury in the Franklin D. Roosevelt Administration, the head of the New York Racing Association and a part owner in the company that made Hanes hosiery and underwear.[9]
In 1956 the syndicate leased Nashua to Combs to race under the Combs colors.[10]
Retirement
At the end of his 1956 season, after thirty career races with a record of 22–4–1, Nashua was retired to stand at stud at Spendthrift Farm in Lexington, Kentucky. He retired as only the second horse to earn more than $1 million. His earnings of $1,288,565 surpassed the great Citation's record and stood as the earnings mark until surpassed by Round Table in the autumn of 1958.
At stud, Nashua was consistent, though his fillies were usually better runners than his colts. His progeny included the Hall of Fame racemare Shuvee, Bramalea (the dam of Roberto), Gold Digger (the dam of Mr. Prospector), and Melbourne Cup winner Beldale Ball.
Nashua died in 1982 and is buried at Spendthrift Farm. In the mid-eighties, the farm commissioned a statue to be raised over him. The sculptor was Liza Todd, the daughter of Mike Todd and Elizabeth Taylor.
In 2010, sportswriter Bill Christine wrote that Nashua "...belongs on that short list of best horses never to have won the Kentucky Derby".[11]