A feature to help drivers that incorporates incorporating walking time between a parking space and your destination as part of travel time estimates may pop up soon in Apple Maps.

Route-planning with Apple Maps in CarPlay
Apple Maps is useful when it comes to planning routes, and it could be a bit better for drivers in the future. It could help them by considering the travel time after they get out of the car.
According to PDFU on X, Apple is internally testing a new TimeToPark flag in Apple Maps for iOS 27.3.