![Speed Sport Challenge expands to more tracks and events in 2017](https://dy5vgx5yyjho5.cloudfront.net/images/v2/s1136x640-M9s2iHqF7Sx347673.jpg)
Speed Sport Challenge expands to more tracks and events in 2017
By Knoxville raceway PR (Knoxville, IA) -- The SPEED SPORT Challenge has been a long-standing tradition at the annual 5-hour ENERGY Knoxville Nationals presented by Casey's General Store, uniting the...