using 65M.. it's approx 60M routing it the way i want it with a bit spare, Needs to go from near front door, 3 floors up, then into the loft (converted). It's an old house with old skiting boards (brittle) mixture of granite and brick walls. Only the lower floors have any sort of plaster then cavity, so it all has to go the hard way removing the old skirting board where there is wood floors or hidden under the carpet for the rest, finally snaking it's way up to my sony sponsored wife getaway area haha. Wired Hub up there so the laptop can connect too if i need it (poor wireless from ground floor) It's a GOOD days job! Granite is a pain in the backside for networks both wired and wireless!! and Aberdeen's full of the stuff!