The Ulster Derby is a flathandicaphorse race in Northern Ireland open to three-year-old horses. It is run at Down Royal over a distance of 1 mile 4 furlongs and 150 yards (2,551 metres), and it is scheduled to take place each year in June.
The event was established in 1936, and it was originally restricted to three-year-olds.[1] For a period it was contested over 1 mile, 4 furlongs and 68 yards. It was opened to older horses in 1994, and increased in distance to 1 mile, 4 furlongs and 190 yards (2,588 metres). In 2014 it was restricted to three-year-olds again and reduced to 1 mile and 3 furlongs (2, 213 metres) before being increased to its present distance in 2015.
The Ulster Derby is Northern Ireland's most valuable flat race.
Vincent O'Brien – Onandaga (1969), Tantoul (1971), Dumbwaiter (1974), Caucasus (1975), Transworld (1977), Encyclopedia (1978), Baba Karam (1987)
Jim Bolger - Nordic Region (1990), Kirov Premiere (1993), Citizen Edward (2001, dd-ht), Wexford Town (2014), Stellar Mass (2016), Clongowes (2017), Change of Velocity (2018)