I think is one of the Google maps basics, i think it’s worth the work time to implement it cause it’s not a new added functionality and its a must have for Travel agencies, Events agencies, Tour operators, Sport events, travel blogs…
Folks, our former Wishlist portal, where our users shared their requests and suggestions, was transferred to this forum. You’re most welcome to vote, add new ideas, and leave your comments here — we surely will consider them all! 
Original Votes: 4
The option of mapping out a route between multiple markers by clicking them.
Yes, I would like to be able to display a map on my websites with a colored line showing the actual route. Interactive but not editable (from the viewers’ end).
For example, a tourist drive or walking path with a set route with points of interest along the way.
Many thanks for your comment, Kate!
Hopefully, we’ll get back to updating our Google Maps app and will consider this idea 
Thank you for your help, it’s much appreciated!