How to configure the calendar not to sync a specific Google calendar? I am using my iPhone 4S to sync with Google Calendar. I don't want it to show the items of the "Sports"-calendar though, because it's a full list of possible group activities at my local gym and it would clog up my calendar. 

After unselecting "Sports" in the list of calendars, the iPhone still keeps showing entries of the "Sports" calendar. 

Rebooting the iPhone does not help either. Going to calendars and settings still shows the Sports-calendar unselected. When I press on "Spinning (18:45-19:30)"  it would automatically add the Sports-calendar back to the list of calendars to sync.

What can I do to not see the calendar items from the Sports-calendar?
This is odd. I'd presume that your Sports calendar events somehow got to one of your other calendars without you knowing. What I'd do is:


first tap on "Hide all" when in Calendars
Next ensure that you do not see Any of your "Sports" calendar events (any events at all from other calendars shouldn't be visible either)
Next start selecting to show the rest of your calendars one by one without ever selecting the "Sports" calendar
The first time you see the culprit events appear - this is the malignant calendar which contains events from "Sports"