World Champion Daniela Ryf to race Challenge Roth

The line up for Challenge Roth on 17 July line up to include World Champion Daniela Ryf from Switzerland, who is number 10 in our top 10 female triathletes of all time. She will join fellow world champion Jan Frodeno, who is aiming to beat the iron-distance world record at Roth. Roth will be the only race outside of the Ironman World Championships at Kona, Hawaii where both current world champions will race.