Kentucky and Wellington, Florida officially submitted bids on Friday to host the 2018 World Equestrian Games, according to the Federation Equestre Internationale.
The Bromont/Montreal area of Canada also submitted a bid for the games.
FEI, the Swiss-based governing body for horse sports, will announce candidate cities for 2018 on December 2, 2013.
Cities must submit host agreements, which detail the financial guarantees, by the end of March.
The cities will present their final bid in person in June, at which time FEI will announce the winning bid.
The FEI World Equestrian Games are held every four years.
The seven disciplines include jumping, dressage and para-equestrian dressage, eventing, driving, endurance, vaulting and reining.
When the games were held at the Kentucky Horse Park in 2010, it marked the first time the event was held outside of Europe.
If Kentucky wins the bid to host the 2018 games in Lexington, it would be the first time the the games would make a return visit to a city.
The 2014 event will be held in Normandy, France.