Can I change my subscription calendar URL that is shown before clicking "subscribe"?

When subscribing to a calendar, you/your subscribers will be shown the Calendar feed URL when asked to confirm the subscription. This URL cannot be customized in any way.

Once the calendar is subscribed to and the calendar feed is synced, the calendar's name (as it is in AddEvent) will be displayed. The URL does not represent what the calendar will be called after subscribed.

As an example, here is what this looks like on Google Calendar:

Here is an Outlook.com example:

Here is an Apple example: