Olivia LaGoy-Weltz grew up in San Francisco, where she began riding at age 5. In 2002, she moved to Europe and spent five years in Holland and Germany at several top barns. She then returned to the U.S. and started her own dressage training business. Currently, LaGoy-Weltz runs a selective training program dedicated to top-quality horse and rider development at Mountain Crest Farm and is based seasonally in northern Virginia and Wellington. LaGoy-Weltz began competing on the Florida circuit in 2009. In 2012 and 2013, she had strong performances with Rifallino. At the Palm Beach Dressage Derby, she and Rifallino won the National Grand Prix Special and then won the National Grand Prix Freestyle at the Wellington Classic Dressage Challenge II. In 2014 and 2015, LaGoy-Weltz achieved several top placings with Lonoir. A USDF gold, silver and bronze medalist, she was Traveling Small Tour Alternate for the 2015 Pan American Games. LaGoy-Weltz had a strong 2018 in Wellington, where she and Lonoir chalked up several victories at the 2018 AGDF, including taking the Grand Prix Freestyle CDI4* during Week 10. She wrapped the circuit helping the American team dominate the Vinceremos Therapeutic Riding Center FEI Nations Cup CDIO3*.