Hi Bjorn,
Thanks for reaching out!
It’s possible to import events from Google Calendar to your WordPress site’s calendar powered by The Events Calendar.
At this time, however, it is not possible to have a full “sync” system going, where if you make a change on Google Calendar it automatically shows up on the WordPress calendar, and if you make change on the WordPress calendar, it automatically shows up on the Google calendar.
If that’s okay, and just importing from Google Calendar to The Events Calendar is fine, then you can do this for with “Event Aggregator”.
Event Aggregator is built right into The Events Calendar—so you just install the free plugin The Events Calendar, then add your Events Aggregator license key, and you can then import from a Google Calendar. (Either one-time or on a schedule…or both!)
You can learn more about the Event Aggregator product itself here: https://theeventscalendar.com/product/event-aggregator/
And you can find a bunch of “Help” articles about how to set up Event Aggregator and do imports with it here: https://theeventscalendar.com/knowledgebase/plugin/event-aggregator/
I hope this information helps! ?
Brendan