This could be your home address or wherever you'll be ... To choose an alternate route, either click on a greyed-out route on the map or click on one of the other routes listed on the left-hand ...

And with iOS 18 you can map out your route and see just how far you'll go before you set foot out the door. Creating a custom route is great for planning a hike or other outdoor activities ...

Map of Königsberg in Euler ... Perhaps it should come as no surprise that such route planning algorithms can be conveniently integrated into your own software, using open source projects ...