Cross-country

Hello,
In Tuchman's book "Stilwell" it says that stilwell participated in West Point cross-country team. I understand that it's a kind of sport you do outside in the fields etc., but is it skiing? running? driving? I mean, is it possible to know that from the west Point context?
Thanks

Well, in the UK, 'cross-country' would certainly mean running. I assume it would mean the same in the US, but I am ready to be corrected on that point.

DFG

I know nothing about sports. But Merriam-Webster says:
Main Entry: cross-country
Function: noun
cross-country racing or skiing