Join hosts Dennis Michelsen and Tim Frost of the National Speedway Directory for Track Source Radio…the official radio show of the National Speedway Directory and Each week Dennis and Tim will bring you the racing news from behind the scenes and on the track from all over North America. Find out which event, series and track we are highlighting for this weekend.

Guests tonight include Tim Mayer from Andretti Sports Marketing, Bob Dillner from, Langley Austin from and Scott Traylor from

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Hear Bob Dillner Tonight on Track Source Radio