The National Sprint Tour was a United States sprint car racing league. It formed in 2005 as a rival to the World of Outlaws. The series folded after one season. The series was started by Brownfield Promotions, Inc. of Snohomish, Washington. The series featured 410 winged sprint cars. After the death of Fred Brownfield, the series was bought by Don Lamberti and Lonnie Parsons (#6 Casey's General Store), Guy Stockbridge (#14 Elite Racing), and Steve Kinser (#11 Quaker State).
Notable former drivers in the NST included 20-time World of Outlaws champion Steve Kinser (Steve Kinser Racing), Danny Lasoski (Roth Motorsports), and Tim Kaeding (Previously Steve Kinser Racing). Lasoski won the inaugural NST championship.
Most of Lasoski's sprint car experience is in the World of Outlaws series, winning the WoO championship in 2001, and finishing second four times, in 1999, 2002, 2003, and 2004. He won the premiere event in sprint car racing, the Knoxville Nationals, in 1998, 2001, 2003 and 2004. Lasoski also won the 360 Nationals in 1995. He raced in the National Sprint Tour in 2006, winning the series' only championship. He rejoined the World of Outlaws after the season, and the NST folded. He has won 122 World of Outlaw feature events and was one of the more popular drivers on the tour.
In January 2014 Lasoski teamed up with Andy Cobb to compete in multiple national tours to include the World of Outlaws.
Lasoski joined forces in 2015 with car owner Tod Quiring and crew chief Guy Forbrook to win the inaugural National Sprint League (NSL) Championship. Lasoski has also won 11 Knoxville Raceway track championships (1986, 1989, 1990, 1992, 1993, 1994, 1996, 2008, 2011, 2015, 2016). He has won more races than any other driver with 112 career wins as of June 24, 2017, in the 410 division at Knoxville Raceway. He also has 37 career wins with the All Star Circuit of Champions.
Lasoski has driven for some of the top sprint car teams in the sport including Tod Quiring, Dennis Roth, Tony Stewart, and Casey Luna.
Lasoski is the uncle to professional sprint car racer Brian Brown.
