Hey @Danielroe,
Unfortunately, the only to do this would be via custom coding.
I say “unfortunately” for two reasons: first is that obviously a simple option or setting would be easier, so I’m sorry that one does not exist for this. The other reason is that we cannot help with custom coding, so if you’re not familiar with customizing theme or plugin code then you should hire a professional to help out.
The gist of making template changes can be learned rather easily, though, especially by getting started with this knowledgebase article → https://theeventscalendar.com/knowledgebase/themers-guide/
If you use those principles you can customize pretty much anything you’d like, in the Map View or otherwise, so definitely give that a read.
I hope this information helps!
Sincerely,
George