Casper Ruud has revealed that one of the keys to recent Norwegian success in the sporting world is a big training centre in the country where all their athletes come together to work out. Norwegian sport is booming at the elite level with Ruud among a talented pool alongside the likes of footballers Erling Haaland and Ada Hegerberg, athletes Jakob Ingebrigtsen and Karsten Warholm, and golfer Viktor Hovland — while Scandinavian sport as a whole has also seen a big surge outside the usual calling of winter sports.