BUCHANAN, Mich.--- The Circle K National Motocross returns to Buchanan this weekend for the 47th year. Hundreds of racers and tens of thousands of fans are expected to be in attendance throughout the weekend. 

Friday, amateur riders will participate in practice runs on the professional track most of the day. At 7 p.m., those riders will begin working on the night track.

The professional racers begin at 1 p.m. Saturday. Each night is followed by a fireworks show starting at 10:30 p.m.