‘True champion of eventing’: US course-designer dies in accident
International eventing course-designer Tremaine Cooper has died in an accident, aged 52.
Tremaine died while working outdoors near his farm in Bluemont, Virginia, on 13 March. A spokesman for the US Eventing Association (USEA) described him as a “true champion of eventing”.
“An athlete, course-designer, builder, father, husband, son, friend, and so much more,” said the spokesman.
“Tremaine’s quiet, thoughtful approach resulted in tremendous advancements for the sport of eventing in all areas but especially in the safety and design of cross-country courses.”
Tremaine was born in New Haven, Connecticut, in 1968. He grew up on a farm and started riding when he was five.
“He was a graduate ‘A’ Pony Clubber and started eventing in 1984, competing to advanced level. At an early age, Tremaine started helping out with the cross-country courses at the Pony Club rallies at his parents’ farm,” said the USEA spokesman.
“At the end of high school and through college he started building seriously and ended up constructing courses throughout the US as well as New Zealand and the UK. Tremaine then focused more on course design, earning his FEI ‘I’ licence more than 15 years ago.”
Never miss out on the latest happenings in the equestrian world
Tremaine was one of the national US Equestrian (USEF) course advisors and was involved in the educational design seminars for USEF and the FEI. He was also co-chairman of the building/design committee and sat on the USEA board of governors.
Continued below…
Olympic rider sets new national eventing dressage record
The 13-year-old gelding was previously competed by Britain’s Francis Whittington
Meet Amanda Steege: the rider who bagged top honours in one of the biggest hunter jumper competitions
Meet Amanda Steege, the newly crowned $50,000 World Champion Hunter Rider
Subscribe to Horse & Hound magazine today – and enjoy unlimited website access all year round
“In 2006 he was awarded the Neil Ayer Course Designers’ Award for his service to the sport as a cross-country course designer,” said the spokesman. “Most recently Tremaine worked with the USEA staff to establish the frangible distribution program through the USEA headquarters.
“Tremaine is survived by his wife Marion, his daughter Sadie, and his son James. Also by his parents, his brother Elisha, by countless brothers-in-law, sisters-in-law, nieces and nephews, and all the animals on his farm.”
A memorial will be held on 22 March at Morven Park in Leesburg, Virginia. Tremaine’s family is establishing a fund in is honour within the USEA Foundation and donations can be made via www.useadonation.org/donate quoting “In honour of Tremaine Cooper”.
Horse & Hound magazine, out every Thursday, is packed with all the latest news and reports, as well as interviews, specials, nostalgia, vet and training advice. Find how you can enjoy the magazine delivered to your door every week, plus options to upgrade to access our H&H Plus online service which brings you breaking news as it happens as well as other benefits.
Stay in touch with all the news in the run-up to and throughout the major shows and events during 2026 and beyond with a Horse & Hound subscription. Subscribe today for all you need to know ahead of these major events, plus online reports on the action as it happens from our expert team of reporters and in-depth analysis in our special commemorative magazines. Have a subscription already? Set up your unlimited website access now

Since joining H&H in 2018, Becky has covered a broad range of equestrian news including welfare matters, veterinary studies, FEI Tribunal hearings and road safety campaigns. She has also interviewed top riders including Scott Brash, John Whitaker and Ian Stark, to name just a few. Becky’s reporting has taken her to Canada for Spruce Meadows and France for Pau five-star, as well as the Royal Highland and Blair Castle International Horse Trials closer to home. She was also a key part of the remote reporting team for the Tokyo Olympics and the Europeans.