@rupsnn Thank טou but I do not want to embed a map with a particular location but to embed an entire map of a route prepared in Google. Their export looks like this:
<iframe src = "https://www.google.com/maps/d/embed?mid=1mpP1w_0CTOvPKQOGZT5oVQSRBJPbsex9" width = "640" height = "480"> </iframe>