Hike Planning & Course Correction on the Fly

Hike planning is very cumbersome exercise. As you can see in the attached image, multitude of routes have been planned but on a give day we could do max distance and ascent based only on our capacity and available hours. Then situation could change while the hike is still in progress requiring course correction on the fly.

Would it be possible to add a feature that would allow us to select certain routes that we still want to do and the system provides us total distance and ascent that it entails interactively? This would allow us to course correct on the fly.