Wedstrijd: Boulder, Boulder (Colorado), Verenigde Staten

• 1988
• 1: Douglas Shapiro
• 1989
• 1: Bryan Miller
• 1990
• 1: James Urbonas
• 1991
• 1: Michael Engleman
• 1992
• 1: Roy Knickman
• 1993
• 1: Scott Moninger
• 1994
• 1: Steve Speaks
• 1996
• 1: Clark Sheehan
• 1997
• 1: Colby Pearce
• 1998
• 1: Eddy Gragus
• 1999
• 1: Scott Moninger
• 2000
• 1: Scott Moninger
• 2001
• 1: Jonathan Vaughters
• 2: Chris Horner
• 3: Chris Wherry
• 2002
• 1: Henk Vogels
• 2003
• 1: Christopher Baldwin
• 2: Colby Pearce
• 3: Dirk Friel
• 2009
• 2: Heath Blackgrove