The issue was first reported shortly after the start of service on Monday morning and resulted in a challenging morning commute for many GTA residents.

GO Transit service was “significantly impacted” on multiple rail lines after a trail derailed as it departed Union Station on Monday morning and Metrolinx says delays will continue into the evening hours.

The issue was first reported at around 8:15 a.m. and resulted in numerous delays and cancellations during the morning rush hour.

At one point, Metrolinx was warning of delays of upwards of two hours.

Service on the UP Express was also temporarily suspended throughout the morning rush hour but has since returned to its normal schedule.

Some trains are departing from Union Station but footage from inside Union Station shows hundreds of stranded commuters standing around the concourse awaiting information on their trains.

The latest:

Trains on the Lakeshore East and West lines are running on 30-minute service, as well as the Kitchener Line (with express trains making all stops and no Bramalea turnbacks)Richmond Hill and Stouffville lines are operating on a 60-minute homebound serviceMetrolinx says there are four outbound trips from Union on the Milton Line, all departing from Track 10. They are scheduled for 4:10 p.m., 5:10 p.m., 6:10 p.m. and 7:10 p.m.Metrolinx says the Barrie Line is providing hourly bidirectional serviceUP Express is running every 30 minutes

“Service has been significantly impacted across the GO and UP Express network and customers can expect continuing delays this evening,” Metrolinx said in a statement provided to CP24 on Monday afternoon.

Chopper footage taken over near Union Station shortly before noon shows what appears to be a partially derailed train with part of the vehicle parked diagonally across two railway tracks.

Disabled train An aerial view of the disabled train near Toronto’s Union Station shortly before noon on Feb. 2, 2026. (CTV Chopper)

In an updated statement issued just before 3 p.m., Metrolinx said that crews are still working to remove the disabled train from the tracks. It said that the incident “has caused signal problems and reduced the number of tracks” that are available for use.

It said that with train movement through Union Station “limited,” it is expected that delays will “continue through the afternoon and evening rush hour.”

“To help manage the flow of people and make your trip home easier, please try to travel earlier if you can and allow extra time. Afternoon service will be reduced because of the limited track availability,” the statement notes. “Staff at Union Station are here to help. Please follow their directions, listen for announcements, and watch the screens for the latest platform and service information. Platforms will be posted as soon as they are available.”

Based on the GO’s website, all seven train lines that service Union Station are experiencing significant delays.

Union Station delays A derailed train caused significant delays across the GO Transit network out of Union Station. (CP24) TTC adding more service

Speaking to CP24 on Monday afternoon, TTC spokesperson Stuart Green said they are boosting service along the 509 Harbourfront by adding buses alongside the streetcar line in order to help stranded GO commuters.

“For those people that would normally go, say, from Union Station to Exhibition, if you live in Liberty Village, for example, we’ll have extra TTC service to get you there,” Green said.

Commuters who typically take the UP Express to Dundas West Station can hop aboard the 505 Dundas streetcar, as Green says there will also be added service along that thoroughfare in case the trains are too packed.

“We’re also adding some trains on Line 1 to get people up to Downsview Park Station as a GO connection,” Green said. “That’s how we’re supporting customers.”

Green could not say how long the TTC would provide these additional measures, saying only that they will continue to run for as long as Metrolinx needs their support.

“Union Station is certainly a priority for them (Metrolinx) as well as it is for us, so everybody’s all hands on deck, I’m sure,” Green said.

‘Did we just get derailed?’

At this point the cause of the derailment remains unclear.

One commuter who was on board the train told CTV News Toronto that he had just rested his head against the window of a train headed for Bloor GO Station on the Kitchener line when he was “jostled” awake.

“It’s like those wooden roller coasters at (Canada’s) Wonderland, where it was really shaky after getting jostled and it elevated on one side,” Kyle Pike said. “People in the train were asking, ‘Did we just get derailed?’”

The train stopped and after a few minutes, Pike said a transit worker ushered passengers toward the accessibility coach. There were about five or six other people in his specific car, Pike said.

GO derailment Kyle Pike’s view after deboarding the derailed Kitchener Line train. (Kyle Pike)

“‘Hey, you will need to get out of this train car, move further down. This isn’t safe,’” Pike said, recalling what the GO Transit employee told them.

According to Pike, passengers were told there was a “mechanical issue” and that they would have to evacuate the train and board another one, an hour-and-a-half later.

Instead of dropping them right off at Union, Pike said they were brought to Exhibition Station—something that struck him as odd given that they were steps away from the downtown terminal.

“Literally, if you’d open the doors at the emergency exit, you could have walked back onto the platforms,” Pike said. “Genuinely, it was pretty frustrating. We’re just going to drop you at Exhibition and find your own way, and also … we’re not going to communicate things properly.”

Nightmarish commutes

At least a dozen people wrote into CTV News Toronto’s newsroom sharing their nightmarish commutes.

Justin Kettles, 18, was on the way to college, leaving Port Credit GO Station at around 9 a.m., and said there were people lined up wall-to-wall at the station.

“It usually takes me like 25 minutes but now, it took me almost an hour and something to get to where I need to go,” Kettles said in an interview with CTV News Toronto, noting how there were other students who turned up to class late.

Another reader described how a 35-minute commute turned into a three-hour-long ordeal to work, after being stranded on an UP Express train stopped between Bloor West and Union, while one other commuter’s 50-minute ride tripled in time because they were stuck on a GO bus without updates on how long the delay would last.

Some readers said they were forced to take an Uber because of the travel delays, as they needed to make their way to a doctor’s appointment or work on time.

Service on the UP Express was temporarily suspended throughout the morning rush hour but in an update to CP24 shortly after 1 p.m., Metrolinx said the service is back on its 30-minute schedule.

Was your commute impacted by GO Transit service issues? CTV News Toronto wants to hear from you.

Email us at torontonews@bellmedia.ca with your name, general location and phone number in case we want to follow up. Your comments may be used in a CTV News story.