Thanks for posting about this. Do you recall if you were using a third party tool to do this? This functionality doesn't exist natively in Strava, but there are some tools out there that do it. Here's a couple of links that might be helpful:
Thank you very much Jane for your response!
I didn't use any third party tools, I simply used Strava's calendar sharing feature. In fact, I still have the shared Strava calendar in Google Calendar (http://stravcal.com/ical/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx), it just stopped syncing with Google Calendar in December. Instead Strava now only allows calendar sharing as a widget. I think the previous functionality was very good.