Can a parent stay in Canada on a super visa for a long, unbroken period without ever having to leave?

A super visa is meant to let a parent or grandparent stay in Canada for an extended period without leaving and re-entering as often as a regular visitor might, but "without ever having to leave" is not quite right — it depends on the authorized period of stay granted at the border and on IRCC's current rules for in-Canada extensions. The super visa itself is a multiple-entry document with long validity, but the actual permission to remain on any given visit is granted separately by a border services officer at entry, and that authorized stay has its own end date.

If a parent wants to remain longer than that initial authorized period, they generally need to apply for an extension from within Canada before it expires — a separate application and decision, not something that happens automatically just because the visa document is still valid. There is also generally a ceiling on how long, or how often, a stay can be extended this way, and the specifics change over time, so they need to be confirmed against IRCC's current published rules rather than assumed. Because timing errors here can lead to an unintentional overstay, anyone planning a long visit should confirm current rules and consider speaking with an immigration lawyer before the authorized stay runs out.