The U.S. Endurance Team is ready to take on the 2025 FEI Endurance Pan American Championships, set for Friday, July 18, at Haras Albar in Campinas, São Paulo, Brazil. Three senior athlete-and-horse combinations and one Young Rider will represent the U.S. in this prestigious international event.
The team is led by Chef d’Equipe Lisanne Dorion, with support from Team Veterinarian Dr. Olivia Rudolphi and Team Leader Nicole Zerbee.
This year’s Championships bring together top endurance athletes from across the Americas and the Caribbean. Festivities officially began with the opening ceremony on Wednesday afternoon, celebrating the arrival of teams and individuals from participating nations.
The championship course spans 120.5 kilometers (approximately 74 miles) and features a variety of terrain designed to challenge the endurance, fitness, and horsemanship of each competitor. Throughout the ride, athletes must carefully manage their horse’s condition—both mental and physical—to ensure a successful and safe performance.
The following U.S. combinations successfully passed the mandatory pre-ride veterinary inspection and are cleared to compete:
Senior Team
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Heather Davis (The Plains, Va.) with HM Kaiser Tesla, a 2016 Anglo-Arabian gelding owned by Haras Paso Manzanero
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Thomas Rajala (Hillsborough, N.C.) with Valente Heb, a 2009 Arabian gelding owned by Fernando De Mello Mattos Haaland
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Meg Sleeper (Frenchtown, N.J.) with RG Kares, a 2015 Arabian mare owned by Marcelo Ulsenheimer
Young Rider Individual
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Avery Betz-Conway (Kingsland, Ga.) with Zendaya Rach, a 2017 Arabian mare owned by Rach Stud Agropecuaria LTDA
Competition Schedule
The Senior division will begin at 6:15 a.m. (GMT-3), followed by the Young Rider division at 6:45 a.m. (GMT-3) on Friday, July 18. The event will conclude with the Prize Giving and Closing Ceremony at 5:00 p.m. (GMT-3).





