how I can find out the position of two moving objects running in a track with respect of each other?

I have latitudes and longitudes of two moving objects. I need to find out and analyze the situation of these two. I know how to calculate the distance between given two lang/lat, but I am not sure how I can compare them. for example, how I can figure out when one of them is further than the other one. These two moving objects are running in a track. And I want to see which one is further in some point of the time. is there any way? let me know if you need me to provide some data.

The image shows the track. the starting point is the right and finishing pint is the left. the following is longitude and latitude of two runners:

1-- 40.712841 -73.721023

2--40.712805 -73.720860

which one is further on the track?

source https://stackoverflow.com/questions/74228243/how-i-can-find-out-the-position-of-two-moving-objects-running-in-a-track-with-re

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