I would strongly suggest you use fibre instead of copper.
If you run copper, you're going to create a big antenna, and you're going to be replacing switches/devices on either end of that cable run ever time there's a lightening storm (I speak from experience).
If you run copper, you're going to create a big antenna, and you're going to be replacing switches/devices on either end of that cable run ever time there's a lightening storm (I speak from experience).