2015: four-year-old season
On his first appearance as a four-year-old, Trip To Paris finished fourth in a handicap over eleven furlongs on the polytrack at Kempton Park Racecourse on 28 March and then won a similar event at Lingfield on 11 April. Two weeks later he was moved up in distance for a handicap over two miles at Ripon Racecourse and started at odds of 8/1 under a weight of 132 pounds. Ridden for the first time by the former National Hunt jockey Graham Lee he took the lead approaching the final furlong and drew away to win by three and a half lengths from Gabrial's King.[8] On 6 May Trip To Paris carried 121 pounds in the 183rd running of the Chester Cup over two and a quarter miles on the Roodeye. After racing in mid-division he made rapid progress approaching the final furlong, took the lead in the last strides and won by three quarters of a length from the favourite Quick Jack.[9] Three weeks later, Trip To Paris was moved up in class to contest the Group Three Henry II Stakes at Sandown. After struggling to obtain a clear run in the straight, he finished strongly to take second place, one and three quarter lengths behind the winner Vent de Force. On 12 June it was announced that the La Grange Partnership had agreed to pay a supplementary entry fee of £35,000 to run the horse in the Ascot Gold Cup. Ed Dunlop commented "This hasn't been an easy call, with £35,000 a hefty sum of money, but he's a young, progressive stayer who enjoys quick ground".[10]
On 18 June, Trip To Paris, again ridden by Lee, started at odds of 12/1 for the 207th running of the Gold Cup over two and a half miles at Ascot Racecourse. The unbeaten Irish horse Forgotten Rules started favourite, whilst the other leading contenders included Mizzou (Sagaro Stakes), Kingfisher (Dee Stakes, Saval Beg Stakes), Tac de Boistron (Prix Royal Oak), Vent de Force, Bathyrhon (Prix Vicomtesse Vigier) and Simenon (Ascot Stakes, Queen Alexandra Stakes). Lee restrained the gelding in the early stages before moving forward on the inside in the straight. Trip To Paris took the lead inside the final furlong and won by one and a quarter lengths from Kingfisher, with Forgotten Rules a neck away in third.[11] After the race, Lee said "He gave me a great ride. When I got on him in the parade ring he was so switched off and relaxed, he raced that way and conserved his energy. He picked up great and deserved it".[12]
At Goodwood Racecourse, Trip To Paris carried top weight of 138 pounds in the two-mile Goodwood Cup and started the 5/1 second favourite in an eleven runners field. After being held up by Lee in the early stages he stayed on strongly in the straight and finished third, beaten a neck and a short head by Big Orange and Quest For More, both of whom were carrying 134.
On 3 November, Trip to Paris ran in the Melbourne Cup at Flemington Racecourse where he finished a highly creditable 4th place.
