The course designer of the Maarsbergen International Horse Trials is Eric Winter from Great Britain – a well-known name in the eventing world. Eric started as a jumping rider (participation in shows like Horse of the Year Show, Hickstead). In 1986 Eric started to focus on eventing. In 1989 and 1990 he participated in the competitions in Badminton and Burghley. Eric has represented Great Britain several times as a team rider. After his sporting career Eric focused on designing of cross country courses.