History - Series Winners - National Sprint
| DATE | LOCATION | TRACK | SERIES | WINNING DRIVER | WINNING TEAM | DISTANCE | |
| 11/13/1965 | Gardena, CA | Ascot Park | National Sprint | A.J. Foyt | Morales Brothers #5 | 30 L | |
| 3/27/1966 | Reading, PA | Reading Fairgrounds Speedway | National Sprint | Jud Larson | A.J. Watson #4 | 30 L | |
| 4/3/1966 | Rossburg, OH | Eldora Speedway | National Sprint | Arnie Knepper | John Wergland #14 | 30 L | |
| 4/17/1966 | Rossburg, OH | Eldora Speedway | National Sprint | Larry Dickson | George Nesler #29 | 30 L | |
| 5/29/1966 | Winchester, IN | Winchester Speedway | National Sprint | Jud Larson | Ward Dunseth/Paul Leffler #16 | 30 L | |
| 6/11/1966 | Reading, PA | Reading Fairgrounds Speedway | National Sprint | Bobby Unser | Jack Colvin #3 | 30 L | |
| 6/19/1966 | Terre Haute, IN | Terre Haute Action Track | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 6/19/1966 | Terre Haute, IN | Terre Haute Action Track | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 6/26/1966 | New Bremen, OH | New Bremen Speedway | National Sprint | Bud Randall | Roger Coke #77 | 30 L | |
| 7/3/1966 | Rossburg, OH | Eldora Speedway | National Sprint | Don Branson | Jud Phillips #6 | 30 L | |
| 7/4/1966 | Salem, IN | Salem Speedway | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 7/10/1966 | Winchester, IN | Winchester Speedway | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 7/15/1966 | Kansas City, KS | Lakeside Speedway | National Sprint | Arnie Knepper | John Wergland #14 | 30 L | |
| 7/16/1966 | Tulsa, OK | Tulsa Fairgrounds | National Sprint | Larry Dickson | George Nesler #29 | 30 L | |
| 7/17/1966 | Muskogee, OK | Muskogee Speedway | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 7/31/1966 | Cumberland, MD | Allegheny County Speedway | National Sprint | Mario Andretti | Wally Meskowski #1 | 30 L | |
| 8/6/1966 | Reading, PA | Reading Fairgrounds Speedway | National Sprint | Roger McCluskey | Mutt Anderson #51 | 30 L | |
| 8/14/1966 | Allentown, PA | Allentown Fairgrounds | National Sprint | Dick Atkins | Wally Meskowski #9 | 30 L | |
| 8/28/1966 | Oswego, NY | Oswego Speedway | National Sprint | Mario Andretti | Wally Meskowski #1 | 100 L | |
| 9/4/1966 | Rossburg, OH | Eldora Speedway | National Sprint | Mario Andretti | Wally Meskowski #1 | 50 L |
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