Calculation of the distance traveled on foot?

Question

Algorithms

We have a user, Peter, the speed of his movement is constantly changing, as well as the length of the steps.
There is also Vasya, he is lower than the pet but always goes faster, although it is more difficult for him on the uphills, so he is slower there and the steps are shorter.

I believe there are calculation formulas taking into account height, age and other parameters.

How to accurately calculate the distance traveled?

Answer 1

you confuse the distance traveled and the distance predicted by some model
in the first case, you need to determine the coordinates with a certain periodicity, or the speed (then the integral),
in the second case, you need the model itself, and a "million" parameters and reservations, including reservations on accuracy
And I strongly suspect that regardless of "height, age and other parameters" they will go as close as possible in terms of distance, because "geography" (mountains, ascents, descents) does not depend on physiological abilities, and the distance between objects on the ground do not change