Ice hockey is DU’s flagship spectator sport. DU’s Hockey Program has been playing NCAA Division I hockey since 1949–50. The Pioneers are one of the most successful programs in the history of collegiate hockey. They are first in all-time in NCAA National Hockey Championships with 10 (1958, 1960, 1961, 1968, 1969, 2004, 2005, 2017, 2022, 2024). The Pioneers have appeared in 19 NCAA Frozen Four Championships, with the most recent Frozen Four appearance coming in 2024. Since the creation of the Western Collegiate Hockey Association in 1959, the Pioneers have won 10 WCHA Regular Season Championships and 13 WCHA Playoff Championships (now the recipients of the Broadmoor Trophy).