I've been told 27 metres of 35mm film print is equivalent to 1 minute of screentime. This means a 3 hr film epic will match approximately 4860 metres or 4.86 kilometres of film footage. So if I could unwind all the film spools and lay them end to end flat on a path, I would theoretically be able to run to and fro along the whole film length in just under an hour. lol. And you haven't even heard me expound on the weight of the film reels.