[1]
K. W. Wehmanen, E. J. Petushek, B. C. Ruby, J. McDaniel, S. Kipp, and S. J. Elmer, “Participation and Finish Trends for North American Winter Ultra-Endurance Races (129-1,609 km)”, J Sci Cycling, vol. 15, no. 2, p. 34, Nov. 2026.