Cosequin® Lexington 4*-S at Defender Kentucky Three-Day Event presented by MARS Equestrian™ to Serve as US Equestrian Open Eventing Series Qualifier

Lexington, Ky. — This year’s Cosequin® Lexington 4*-S will serve as a US Equestrian Open Eventing Series Qualifier when the Defender Kentucky Three-Day Event presented by MARS Equestrian™ returns to the Kentucky Horse Park, April 24-27. Equestrian Events, Inc. (EEI), producer of the world-renowned event, is thrilled to welcome back Cosequin® as the Title Sponsor of the Four Star competition.

Introduced in 2021, the Cosequin^® Lexington 4*-S runs concurrently with the Defender Kentucky Three-Day Event presented by MARS Equestrian (K3DE), one of only seven annual Five Star three-day events in the world. Known as “The Best Weekend All Year,” K3DE annually attracts nearly 90,000 spectators who also enjoy extensive shopping, a variety of hospitality experiences and a wide array of demonstrations. The event also features the Kentucky International CSI5* presented by Hagyard Equine Medical Institute.

This year, the Cosequin^® Lexington 4*-S is a US Equestrian Open Eventing Series Qualifier. The inaugural US Equestrian Open Eventing Series consists of 20 qualifying events around the country leading into the Series Final, to be hosted as a CCI4*-L at the Morven Park International in Leesburg, VA, October 9-12. The Series will award $50,000 in prize money to the three highest-placed combinations following the conclusion of the qualifying period, as well as $200,000 in prize money at the Final in October. The Series was created to further invest in future eventing athletes and showcase the sport to a broader audience. Additional information is available here.

“We are thrilled to welcome Cosequin^® back as a cherished partner of our event and as Title Sponsor of the Cosequin^® Lexington 4*,” said Molly Day, Executive Director of EEI. “Without the generous support of our sponsors, we would not be able to produce our incredible event. We are excited about being part of the new US Equestrian Open Eventing Series and look forward to another great year of world-class competition.”

“As the #1 veterinarian recommended joint health supplement brand, Cosequin® is committed to supporting the well-being of equine athletes. We are thrilled that the Cosequin® Lexington 4* will serve as a qualifier for the US Equestrian Open Eventing Series, further strengthening the future of eventing in the United States,” said Dr. Ethan Sutherland of Cosequin^®.

Tickets for viewing the Cosequin^® Lexington 4*-S are included when purchasing K3DE tickets and can be purchased at kentuckythreedayevent.com/tickets.

Find all of our coverage on our 2025 Defender Kentucky Three-Day Event landing page.

— Edited Press Release

Thanks to CareCredit for our 2025 Defender Kentucky Three-Day Event coverage.