Ethernet bandwidth and distance

[ChrissyT88]

Hi,

Due to problems with wireless range and the price of better dedicated wireless kit, i am thinking about running a long ethernet cable from the router upstairs through the loft/celing and into a bedroom. This will probably need an ethernet cable that is 20-30m in length. This may be a stupid question, but will using a very long ethernet cable reduce its bandwidth significantly and will there be a lot of interference on a long cable from power lines in the walls/celing etc?

Thanks

 

[ChrissyT88]

Cheers guys, thanks for the replies. Thanks to the advice, i will think about laying two, and its good to know that it'll be fine for my needs. I hate to say it but its not quite as adventurous as slamming holes through the ceiling cos theres already some holes leading into the loft, but im sure finding them will prove to be near impossible!