Champion Racing Oil to Become Title Sponsor of Interstate Sprint Car Series SpeedWeek
The Interstate Sprint Car Series is a regional touring Winged Sprint Car series in the Pacific Northwest. It collects the most talented Limited, Sportsman, Crate/Spec, and 305 Sprint pilots in the area under one banner. A major highlight of the 2018 season will be Speedweek from August 11t to August 18th. It will feature six races in seven nights at five different race tracks.
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