The average train between Markham and Oshawa takes 2h 12m and the fastest train takes 1h 38m. The train service runs several times per day from Markham to Oshawa. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 4 hours between Markham and Oshawa. The earliest departure is at 5:28 AM in the morning, and the last departure from Markham is at 10:29 PM which arrives into Oshawa at 7:08 AM. All services require a transfer, and take on average 2h 12m. The schedules shown below are for the next available departures.

1h 40m • 1 change

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2h 24m • 1 change

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2h 25m • 1 change
Want to know about travelling from Markham to Oshawa? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct train from Markham to Oshawa. However, there are services departing from Markham station and arriving at Oshawa station via Union Station GO station. The journey, including transfers, takes approximately 2h 12m.
Markham to Oshawa train services, operated by GO Transit, depart from Markham GO station.
Markham to Oshawa train services, operated by GO Transit, arrive at Oshawa station.
The distance between Markham and Oshawa is 33.6 km. The road distance is 92 km.
You can take a train from Markham GO to Oshawa via Toronto Union Station in around 2h 24m.