Maintenance: During the night from Tuesday to Wednesday, 28/29 May 2019, maintenance work on the ZORA NFS is scheduled for 7:00pm to 9:00am. During this period ZORA and JDB will not be available. Thank you for your patience.
Ehrensperger, Luca; Knechtle, Beat; Rüst, Christoph Alexander; Rosemann, Thomas (2013). Participation and performance trends in 6-hour ultra-marathoners – a retrospective data analysis of worldwide participation from 1991-2010. Journal of Human Sport and Exercise, 8(4):905-924.