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It's not my favourite show (in fact I've never seen an episode), but somebody out there sure likes it.
The CBC's "Heartland" is about to start its 17th season and is ready to shoot its 250th episode. Considering most shows are lucky to make it to 100 and syndication heaven, that's quite an accomplishment.
CBC's Heartland Reaches 250th Episode in 17th Season
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387 episodes of The Beachcombers were produced between 1972-1990. I haven't watched any of them.
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Murdoch Mysteries has had 263 episodes so far. For the last two seasons 24 episodes have been produced. Probably this was to catch up after lighter production during COVID.
The show runs on the Ovation network in the US and various streamers. Wouldn't be surprised if they got picked up by an OTA network if the strike lingers. Likely CW or ION who both have a habit of running Canadian programming. And the new executive in charge of programming for CW is Canadian.
Even though Heartland has been very popular streaming stateside, don't know if they have ever run on a OTA network.