Eventer Amy Tryon passed away in her sleep today, April 12, at the age of 42. Details on a cause of death have not yet been announced.

Throughout the past decade, Tryon, of Duvall, Wash., was a frequent contender at the four-star level and rode on multiple U.S. squads for international championships. In her first senior championship outing, in 1999, she placed fourth individually at the Pan American Games in Winnipeg.

Tryon went on to ride on the gold-medal team at the 2002 FEI World Equestrian Games in Jerez, Spain, as well as the bronze-medal winning team at the 2004 Olympic Games in Athens. That year, having juggled her amateur riding career with her full-time job as a firefighter, she was also named the Chronicle’s Eventing Horseman of the Year.

In 2006, Tryon turned to riding professionally. That year she won individual bronze at the WEG in Aachen, Germany, and she again earned the magazine’s Horseman of the Year title, while her mount Poggio II was also named the Chronicle’s Eventing Horse of the Year. Two years later, the pair represented the United States at the 2008 Olympic Games in Hong Kong.

Tryon’s husband of 16 years, Greg Tryon, survives her.