Advise on Long Phono Cable run

If you MUST do this, find the absolute lowest capacitance cable (per foot) that exists, use a high output cartridge (MM or MI recommended over HOMC), and expect to have to live with some sonic degradation.  If you live in a high RFI area, expect that too.

Would this be possible? Are there cables that I could use that will not have too much of a negative impact?

5 meters? I think it is impossible to find a phono cable that long!
The best solution is save the money on phono cable, buy a phono amp with xlr output and put it close to the turntable. use a xlr cable connect the phono amp output to Parasound Hint 6 balanced input.

Try it, but honestly I think you are going to need to use a phono stage next to the turntable.

Wow, I thought mine was long at about 8’. I’m with the rest, best to get a phono stage, you might have to have something custom made if that is your only option. Transparent with make you a custom one $$$ or maybe try Blue Jeans Cable. I’m sure there are others...

With such a long phono cable you need a Grado MI cartridge which is irrelevant to cable capacitance as stated in the manual, the rest of the cartridges i know require certain amount of capacitance for optimal performance (and it can be too much for 5 m long cable for some MM).  

Actually, for such a long run, you need a Balanced phono stage and Balanced phono cable with XLR, but if you can’t do that simply order any custom length from Frank at Signal Cable Silver Resolution.

http://signalcable.com/silverresolutionphono.html

I have ordered two sets of phono cable from his for my LOMC cartridges, the reason was the length, i was looking for something longer than usual.

The price is great and his silver cables are highly regarded here on audiogon, buy with confidence.