Moto gp racing The second running of the 2014 Springfield Mile gets underway with heat racing in both the Grand National Championship (GNC) and Pro Twins classes.\r<br>\r<br>Watch the stars of AMA Pro Flat Track race their way into their respective main events at the legendary Springfield Mile! For the Pro Twins heat races, the .\r<br>\r<br>The best flat track racers in the world face off in Springfield, Ill., on Sept. 6 for the Springfield Mile. Riders in both the elite Harley-Davidson GNC1 presented by .\r<br>\r<br>The 2014 Labor Day Weekend edition of the Springfield Mile was an absolute barn burner, and the battle kept fans on the edge of their seats until the very last .
