All-Time North American Best 100-km Performances UltraRunning Magazine 11/24/2013 UltraRunning Magazine 11/24/2013 795 Below is a listing of the all-time top performances at 100-km for North American residents. Thanks to Franco Anichini for the compilation of most of this data. Updated April 23, 2012 FacebookTwitterEmail UltraRunning Magazine More from UltraRunning What’s Up in Ultra This Weekend — June... What’s Up in Ultra This Weekend — June... What’s Up in Ultra This Weekend — May... What’s Up in Ultra This Weekend — May... What’s Up in Ultra This Weekend — May... What’s Up in Ultra This Weekend — May...
