With over 50 years’ experience in hosting events US 131 Motorsports Park, a world-class drag racing facility, is located in Martin, Michigan on US 131 south of Grand Rapids and north of Kalamazoo. Hosting the ADRL-American Drag Racing League, IHRA Nitro Jam, Thunder Nationals, Funny Car Nationals, Davidson Express Motorcycles Chopper Fest, Jet Warz, AMSNOW Snowmobile Drags, Weekly Bracket Racing, Monthly Midnight Madness events, Motorcycles, Ladies racing and Jr. Dragsters (ages 8-17 year old), we have something to offer to everyone. We race weekly April-November. As always, parking and pit passes are FREE with each gate admission. The B-93 Birthday Bash is a free admission event with a parking fee per vehicle. Fast and family friendly!