"I’m scheduled to go to return to return to St. Petersburg in about a month." I'm not sure how that's going to be done but good luck with that.
Here's what could have been written for this to make sense: I'm scheduled to return to scheduling to return to St. Petersburg in about a month. I couldn't fit the go-to anywhere. Four tos all one word apart. I wonder if there's a list of interesting brainburps for this to go on.