Hello,

If you turn off URL SEF routing, you will get the basic URL.

Of this kind:
This non-SEF URL is permanent.
But linked to a specific Itemid.
If you want it for all cases, to the best is to create a menu item of type list of events (which could be a hidden menu item) and with no filtering options to be able to display any events.
Then, you can use this menu Itemid.
If you need to use a SEF URL, so it's still possible with the alias used for this specific menu item.
Example:of the event.
Or with a specific date:
Where [EVENT_ID] is the ID of the event.

Hope this helps for the task you want to achieve?

Best regards,
Cyril