Riverside Speedway Riverside Speedway Groveton NH 603.636.2005 http://www.riversidespeedway.com/1/4 mi Asphalt High Banked Oval TrackSaturday Racing LM Sportsmen; FLying Tigers; Strictly Stocks & Dwarf CarsI-93 Exit 42, north on SR 142, 23 miles to US 3, north 1/2 mile to Brown Rd, west 3/4 mile. Prev Next