He returned in 2015 and was then sold to Darley Stud July 2015 for future stallion duties, going onto win the Lennox Stakes and the International Topkapi Trophy for Godolphin.

Starting the 5/2 joint-favourite in a field of twelve runners he took the lead approaching the final furlong and won by a neck from Ertijaal, with a gap of seven lengths back to Major Crispies in third.

[6] On 15 September, Toormore was sent to Ireland to contest the Group One Vincent O'Brien National Stakes over seven furlongs at the Curragh Racecourse.

He started favourite in a field of five runners, with his main opposition appearing to come from Sudirman, who had beaten War Command into third place in the Phoenix Stakes.

His form was boosted, however, by the performances of the horses he had beaten: War Command won the Dewhurst Stakes, whilst Outstrip and Giovanni Boldini finished first and second in the Breeders' Cup Juvenile Turf.

[8] On 17 April at Newmarket Toormore made his three-year-old debut when he started even money favourite for the Craven Stakes, a trial race for the 2000 Guineas.

Toormore started 7/1 third favourite behind Kingman and Night of Thunder for the St James's Palace Stakes at Royal Ascot, but ran poorly, weakening in the closing stages to finish sixth of the seven runners.

Ridden by Hughes, took the lead approaching the final furlong but was overtaken in the closing stages and beaten a neck by the five-year-old Es Que Love.

In the Queen Anne Stakes at Royal Ascot he led for most of the way before being overtaken in the final furlong and finishing fourth of the eight runners behind Solow.

Toormore was then sent to France for the Prix Jacques Le Marois at Deauville Racecourse where he started 5/1 second favourite and finished fifth behind the five-year-old mare Esoterique after leading until the last 400 metres.

On his final appearance of the season he was sent to Sha Tin Racecourse for the Hong Kong Mile on 13 December and finished unplaced behind Maurice.

On his first appearance as a five-year-old Toormore contested the Group Two Bet365 Mile at Sandown Park on 22 April when he was ridden for the first time by William Buick.