A serious crash at the intersection of Markham Road and Denison Street in Markham, Ontario, sent two motorcyclists to hospital with serious injuries on Saturday afternoon, July 25, 2026.
Police were called to the area shortly after 1:30 p.m. following reports of a two-vehicle collision. Emergency crews quickly responded as officers secured the scene and medical personnel treated those injured in the crash.
A motorcyclist and a passenger were both taken to hospital with serious injuries. No other injuries were reported.
Serious Crash Under Investigation
The collision brought a significant emergency response to the Markham Road and Denison Street area as investigators began examining what happened.
Police are working to establish the circumstances that led to the crash, including the movements of the vehicles involved immediately before the collision. Investigators may examine witness accounts, physical evidence from the roadway, vehicle damage, and any available video footage as they work to reconstruct the incident.
The cause of the crash has not yet been determined, and the investigation remains ongoing.
Traffic Disruptions Following Collision
The crash also caused traffic disruptions in the area, with police warning motorists to avoid the intersection while emergency crews and investigators worked at the scene.
Lane closures and restrictions may remain in place during the investigation and cleanup operation. Drivers are being urged to slow down near emergency vehicles, follow directions from officers, and use caution when travelling through the area.
Two Motorcyclists Hospitalized
The two injured individuals were transported to hospital for treatment. Their conditions were described as serious, while authorities did not report any additional injuries connected to the collision.
Further information regarding the extent of their injuries may be released as the investigation continues.
Investigation Continues
Police continue working to determine exactly how the crash occurred. Anyone who witnessed the collision or may have relevant dashcam footage could potentially assist investigators in establishing the full sequence of events.
The Markham Road and Denison Street crash remains an active investigation as authorities continue gathering evidence.
The collision serves as another reminder for drivers and motorcyclists to remain alert at busy intersections and to exercise extra caution around emergency scenes.
Disclaimer: This article is based on preliminary information available at the time of publication. Accident details, injury updates, traffic conditions, and other information may change as authorities continue their investigation and release further updates.