[secabeen]

I posted this below, but I think it's also good here, because it's a fun anecdote. I have a 10Gig run on 200+' of Cat5E in production that works well with only a few hundred errors a year. Running fiber or Cat6A into that room would costs thousands. This is mostly a credit to the interface designers, who let us get away with stuff that we totally shouldn't.

The Cat5E run is nearly perfect, entirely away from power lines, and clean direct from one room to another.

[StillBored]

If your running direct port->port you get a lot of additional margin because the plug->jack is where a lot of the loss comes from and the assumption in the spec is that a run looks like "port jack->patch cable->panel jack->solid fixed run->jack->patch cable->end port".

So if your cable run is "port->long solid conductor cable->port" its going to give you some extra feet.