From your event campaign's manage page, click the "View ZIP/Postal Code Search Page" button to view your event campaign's zip/postal code search page.
On that page will be a map with markers for all of your events in the campaign. Below the map, you can search by ZIP/postal code, city, or Event Title in the search bar. This will let you search for events near you, at which point the map will show only nearby events. You'll see a list of all nearby events at the bottom of the page. Virtual events can have a partial address, so they'll still show up on the map given a city, state, or zip code. Virtual events with no address will only show up on the list of events below the search.
If you click View Advanced Search Options you'll be able to filter events by date or view only Virtual events. You'll also be able to Remove the entry and click search to view the full map again.