How to set Maps to the Fastest Route on iPhone?

You can select different options before you start the navigation. If you are already on route, you will have to recalculate your route and choose the preferred option.

Have a look at this related article:

Select other route options in Maps on iPhone - Apple Support

No. Maps show the best route. If you try to navigate based on your knowledge, it will recalculate the time taken.

You can also get the option of multiple routes and pick one which you think is shortest.

How to Set Google Maps to the Fastest Route. Here is what you need to do to get the fastest route through Google Maps: Add your start and end points. Google Maps will automatically take factors like traffic and road conditions into account before plotting the fastest route.

I recently drove from Southern Michigan to the west of Chicago and Apple Maps automatically displayed three selectable route options of varying distance and duration. Traffic congestion on the toll roads make duration a joke though.

wiredr Said:

"Route change: can route be changed from fastest to shortest in maps"

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No. And there is hills, and as you travel over them, lengths will increase, if you do in a strait line.