Where are the most detailed & realistic travel rules to be found?

[hal]

Originally Posted by Skarg

My first RPG campaign was circa 1980 using The Fantasy Trip: In The Labyrinth, which despite being a fairly short book included the fundamental mode of play that the world is mapped with terrain types and roads and there are rules for how much you can carry and how your leader...

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Remember the arctic rules involving down filled winter gear and snow shoes for TFT? ;)