As a breeding stallion, his other successful offspring included Wince, Sublimity, Cityscape (Dubai Duty Free) and Thistle Bird (Pretty Polly Stakes).
[5] Unusually for a modern racehorse, Kastoria did not appear on the track until the age of four, making her debut on 10 June 2005 2005 when she finished second in a maiden race over one mile and five furlongs at Wexford Racecourse.
[6] She was then stepped up in class for the Listed Give Thanks Stakes at Cork Racecourse on 1 August and finished second, beaten a short head by the Aidan O'Brien-trained Mona Lisa.
After tracking the leaders, she produced a sustained run in the straight, overtook the front-running Albahja inside the final furlong and won buy half a length.
[7] Kastoria was back in England in September for the Group 2 Park Hill Stakes at Doncaster Racecourse in which she was made 7/2 co-favourite alongside Punctilious and the French-trained mare Sweet Stream (winner of the 2004 Prix Vermeille).
After racing in fifth place she made steady progress in the straight, went to the front with a furlong and a half left to run and won by a length from her stablemate Virginia Woolf.
After being restrained by Kinane at the rear of the seven-runner field she stayed on strongly in the straight took the lead inside the final furlong and held off the late challenge of Collier Hill to win by a head.
[13] In October Kastoria was sent to Canada where she started favourite for the Pattison Canadian International at Woodbine Racetrack but finished eighth of the ten runners behind Collier Hill.
After being badly hampered and dropping back to last place entering the straight she produced a very strong finish and appeared to be an unlucky loser as she failed by a nose to overhaul Collier Hill.