Technically, it's highly possible, since you can export your routes to .gpx files and manipulate the timestamps. 

A .gpx file is actually an xml file which is similar to html files with a number of tags. Each tag tells you the current longitude, latitude, and the current time stamp.
You actually can edit the .gpx file with a text editor, i.e. notepad and edit the file by yourself. However, you need to know the exact long-lat where you want to "pause".