Find Your Google Calendar Feed URL

Find your calendar on the lower left-hand corner of your Google Calendar page. Click the arrow button to the right of your calendar.

Select "Calendar settings" from the drop-down menu.

Scroll down to the "Private Address" section. Right-click the XML button and copy the URL. If your calendar is public you can use the URL from the "Calendar Address" button.

Your URL should look something like: http://www.google.com/calendar/feeds/email%40gmail.com/private-XXXXX/basic