Here is the full list of all 9 Horse Racing 2016 (EU) trophies - there are 3 bronze, 5 silver and 1 gold.
Finished Top Three in 50 races.
Finished Top Three in the Horse Racing Championship.
Completed all the races and finished the Game.
Completed any 50 races or 10 seasons in the Championship.
Completed 5 seasons of the Championship.
Finished Top Three in 10 races
Completed 10 races.
Completed the 5 races of the Season 1.
Completed the First Race of the Horse Racing Championship.