Possible to delete a workout?

Every once in a while, I walk to the train and then I forget to stop my mapmywalk app and I get on the train. This messes up my map, and it thinks I walked on the railroad tracks.

I can delete the workout from mapmywalk, but it stays synced on my lifemap. Any way to delete them?

You have to delete the activity in question in both Citystrides and your tracking app. In order to do so in Citystrides, go to the activity in question and press delete. See pic below

This will delete the activity from your lifemap. You must also delete the activity from your tracking app or it will get imported again.