The Race Day Add-on for Cities: Skylines has 8 achievements.
Host and complete a Motor Race event.
Build a 5km Motor Race Event route.
Build a 3km Running Event route.
Build a 4km Cycling Event route.
Attract 1,000 spectators to an event.
Hold a night time parade.
Host the highest tier of Motor Racing event.
Host the highest tier of Parade event.