[openrailwaymap] Extract kilometration from map?

Hello,

for the purpose of calculating average speed on streetcar routes by section, I need to extract the kilometration of the lines, including stops of course.

What I do not mean is to take a tool à la Google Earth's "path" tool and re-trace the routes myself, since the vector paths are *already* in the map.

Is there any way to do this?

TIA,

Sincerely,

Wolfgang