Relying directly on snow, ice, and cold temperatures, outdoor winter sports are already experiencing and responding to climate change. Through an online survey of elite-level athletes and coaches (n = 390), and semi-structured key stakeholder interviews (n = 8), this research investigates the climate thresholds and adaptations that enable world-class performance in safe and fair competitions. Ideal competition conditions include temperatures within −1 to −10 °C, on consistent snow surfaces. Over 95% of respondents stated climate change is or will negatively impact their sport, with current adaptations ranging from good (snowmaking) to poor (canceled training runs). Beyond competitions, athletes and coaches are concerned climate change will reduce training opportunities, negatively impacting next-generation athlete development and winter sport culture. The results yield important insight into athlete and coach perspectives on climate change impacts, thresholds, and adaptations that can inform future policy, planning, and management for winter sport organizations at all levels.