August 4, 1981             Colorado National Speedway, Dacono, CO      USAC Midget      Dave Strickland Jr.
August 5, 1981             Colorado National Speedway, Dacono, CO      USAC Midget      Rich Vogler
August 13, 1982             Colorado National Speedway, Dacono, CO      NASCAR Grand American      Larry Phillips
September 18, 1982             Colorado National Speedway, Dacono, CO      NASCAR Grand American      Larry Phillips
July 4, 1989             Colorado National Speedway, Dacono, CO      American IndyCar Series      Robby Unser
July 4, 1989             Colorado National Speedway, Dacono, CO      American IndyCar Series      Buddy Lazier
July 15, 1990             Colorado National Speedway, Dacono, CO      American IndyCar Series      Johnny Unser
July 16, 1991       Mile High Challenge 150      Colorado National Speedway, Dacono, CO      ARTGO Stock Car      Rick Carelli
July 28, 1991       Koa/Purifoy 150      Colorado National Speedway, Dacono, CO      American IndyCar Series      Bill Tempero
August 21, 1993       Colorado Chevrolet/Geo 100      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      Doug George
April 24, 1994       Total Motor Oil 300      Colorado National Speedway, Dacono, CO      ASA Stock Car      Butch Miller
May 20, 1995       Mistic Premium Beverages 200      Colorado National Speedway, Dacono, CO      NASCAR Winston West Series      Mike Chase
July 15, 1995       Total Petroleum 200      Colorado National Speedway, Dacono, CO      NASCAR SuperTruck Series      Butch Miller
June 1, 1996       Colorado 200      Colorado National Speedway, Dacono, CO      NASCAR Craftsman Truck Series      Mike Skinner
July 13, 1996       Snap-On 200      Colorado National Speedway, Dacono, CO      NASCAR Winston West Series      Ron Hornaday Jr.
July 19, 1997       Colorado 250      Colorado National Speedway, Dacono, CO      NASCAR Craftsman Truck Series      Ron Hornaday Jr.
May 8, 1999       Colorado 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Jason Schuler
June 3, 2000       Sachs Lawlor 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Steve Carlson
June 2, 2001       Sachs Lawlor 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Steve Carlson
July 14, 2001       NAPA 250      Colorado National Speedway, Dacono, CO      NASCAR Winston West Series      Steve Portenga
August 18, 2001       United Power Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      Auggie Vidovich
June 1, 2002       Auto Trader 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Steve Carlson
August 17, 2002       United Power Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      Jerry Robertson
June 7, 2003       Auto Trader 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Eddie Hoffman
August 16, 2003       United Power/Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      David Gilliland
June 5, 2004       Auto Trader 150      Colorado National Speedway, Dacono, CO      NASCAR Midwest Series      Justin Diercks
August 21, 2004       United Power/Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      Jim Pettit II
October 9, 2004       NAPA 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Mike Duncan
June 5, 2005       Auto Trader 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest/Midwest Series      Brandon Riehl
July 30, 2005       United Power Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest Series      Jerry Robertson
June 3, 2006       Auto Trader 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest/Midwest Series      Josh Vadnais
August 19, 2006       United Power/Touchstone Energy 150      Colorado National Speedway, Dacono, CO      NASCAR Southwest/Midwest Series      Eric Holmes
June 2, 2007       NAPA 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Mike Duncan
June 7, 2008       Toyota NAPA 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Eric Holmes
August 15, 2009       Toyota NAPA 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Paulie Harraka
August 14, 2010       Toyota NAPA Auto Parts Bonus Challenge 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Eric Holmes
August 6, 2011       Toyota NAPA Auto Parts 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Dylan Kwasniewski
July 28, 2012       NAPA Toyota 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Greg Pursley
July 27, 2013       Toyota NAPA Auto Parts 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Derek Thorn
July 26, 2014       NAPA Auto Parts Toyota 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Chris Eggleston
August 22, 2015       NAPA Auto Parts Toyota 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Ryan Partridge
June 11, 2016       NAPA Toyota 150      Colorado National Speedway, Dacono, CO      NASCAR West Series      Chris Eggleston