Sina SiegenthalerSina Siegenthaler is a Swiss snowboarder who specializes in snowboard cross.CareerSiegenthaler represented Switzerland at the 2025 Snowboarding World Championships and won a bronze medal in the mixed snowboard team cross event, along with Valerio Jud. She also competed in the snowboard cross event, where she had the fastest time during qualification, however, she finished in eighth place.