The Canadian International Stakes was founded in 1938 as the Long Branch Championship. The first race was held at the Long Branch Racetrack in Etobicoke. The race was run on dirt and was restricted to Canadian-bred three-year-olds. The Race was renamed the Canadian International Stakes in 1939, and was restricted to Canadian-owned horses. The Race was opened to horses of all ages in 1940, though the owner still had to be a Canadian resident. The eligibility was revised to ages three and up with no residence restriction in 1954.[4] During World War II, Long Branch Racetrack did not operate, and the Race was held at Dufferin Racetrack. Long Branch Racetrack closed in 1956, and the Race moved to Woodbine Racetrack. The Race became a turf race in 1958.[5] The Race name changed to Canadian International Championship Stakes from 1966 to 1980. The Race name changed to Rothmans International from 1981 to 1995 for its sponsor, the Canadian subsidiary of the Rothmans International plc. The Race changed the sponsor to Pattison Outdoor Advertising.[1]
1987–1993 1+1⁄2 miles (Out of Chute, inside of the main track)
1994–2021 1+1⁄2 miles (One complete circuit outside of the main track)
2023–present 1+1⁄4 miles
Winners have come from breeding farms in Canada, the United States, Ireland, the United Kingdom, France, and Argentina. The Canadian International has been contested by many of the horses, jockeys, and trainers in thoroughbred racing history worldwide. Its success as a North American race drew an international field, helped inspire the creation of the Breeders' Cup races in 1984, which were held at Woodbine in 1996.
Many notable horses have won the Canadian International. The most renowned renewal was in 1973 when the Canadian International was the final race for Secretariat. His 6+1⁄2-lengths victory is the widest winning margin in the race's history.[6] Other notable winners include Bunty Lawless, voted "Canadian Horse of the Half Century," who won in 1938 and 1941.[7] Dahlia became the first European-based horse to win the race, becoming the first horse to win Group / Grade One stakes in England, France, Ireland, Canada, and the U.S. In 1974.[8]
Eclipse Award voting began in 1971. Eight winners of the International were named Champion Turf Horse for that year: Secretariat (1973), Dahlia (1974), Snow Knight (1975), Youth (1976), Mac Diarmida (1978), All Along (1983), Singspiel (1996), and Chief Bearhart (1997).[9]
In 2005, the purse for the race was increased to CA$2 million to help attract European horses who did not choose to enter the Breeders' Cup Turf. The purse was reduced to CA$1.5 million in 2011, then to CA$1 million in 2013, and to CA$800,000 in 2017.[1]
The Canadian International was not run in 2020 due to the COVID-19 pandemic.[10] The 2022 race was also scrapped due to COVID-related logistical issues that made it difficult for overseas horses to travel to Canada at the time.[11] The race returned in 2023 at a shorter distance of 1 1/4 miles for a purse of CA$750,000.[2] Woodbine shelved the Canadian International again for 2024; track management stated that running the race that year was not viable in part due to difficulties with available cargo flights that would allow European horses to compete.[12]