ISU Challenger Series

The ISU Challenger Series is a series of ten international figure skating competitions sanctioned by the International Skating Union (ISU) and organized by ISU member nations. The series was introduced in 2014; its stated goal is to provide consistent organization and structure within a series of international competitions, as well as opportunities for senior-level skaters to compete at the international level while also earning World Standing points. The Nebelhorn Trophy, the Nepela Memorial, and the Golden Spin of Zagreb have been regular competitions in the series since the beginning, as was the Finlandia Trophy until 2024. Skaters and teams are eligible to compete in up to three Challenger Series events each season, and their top two scores are combined to calculate their total Challenger Series scores.