Shannonville Motorsport Park began as a dirt oval with bedrock forming its front straight. Over time the facility developed into a multi-configuration road course through a series of extensions and interconnections.
The first permanent road circuit to be built was the 1.800 km (1.118 mi) "Nelson" circuit, named after John Nelson, the late owner of the facility at the time. The second addition was the 2.230 km (1.386 mi) "Fabi" circuit, constructed north of the Nelson layout. The Fabi circuit was named in memory of Bertrand Fabi, a young Canadian racing driver who died while testing a Formula Three car in England. Its long back straight doubles as a drag strip, giving the facility an additional use for acceleration-based events.
The Nelson and Fabi circuits were linked to form the 4.030 km (2.504 mi), 14-corner "Long Track," the circuit's longest configuration. A further link from after the first corner on the Nelson to the seventh corner of the Long Track created the 2.470 km (1.535 mi) "Pro Circuit" layout, which serves as the primary configuration for many competitive events.
Shannonville Motorsport Park hosts a range of racing and motorsport activities. The Canadian Touring Car Championship makes an annual visit to the facility, as does auto-racing body CASC through its Regional Road Races program. The Canadian Superbike Championship also features Shannonville on its calendar, reflecting the circuit's suitability for motorcycle racing. Drag racing is a significant component of the facility's programming, run on the Fabi circuit's back straight.
Two fatalities occurred at Shannonville in the year 2000, both involving motorcycle racing.
On May 21, 2000, Glenn Schauble was killed while crossing the finish line during a celebration. Schauble lost control during a wheelie at the checkered flag on the front straight, flipped backward from his Yamaha YZF-R1 1000cc motorcycle, and was struck by several riders in a tight following pack. He suffered fatal head and neck injuries. The accident occurred at the end of the Pro Superbike race at a RACE Ontario Superseries meeting. Schauble was a computer sciences student in his first year as a professional racer, having been promoted after winning championships in two amateur classes in 1999.
On September 24, 2000, Frank Wilson Jr. — described as Schauble's closest friend — crashed at the circuit in what he had intended to be his final race. Wilson had already secured the Canadian title for that season before the event and had been contemplating retirement following Schauble's death months earlier. He crashed in Turn 2 of the Pro track on a single-bike incident during the 600 class warm-up lap, believed to have been caused by highsiding on cold tires. Wilson succumbed to his injuries at Kingston General Hospital.
The circuit's combination of configurations — from the compact Nelson loop to the full Long Track — alongside its extensive run-off areas makes Shannonville an adaptable venue for both competitive racing and private testing. Race teams from Toronto and Montreal regularly use the facility in preparation for events held on street circuits, given the similarity in track characteristics. The drag strip and oval heritage add further versatility to a facility that has grown considerably from its origins as a dirt oval on bedrock.