GoKawiilEthernet speed limits kick in at 328 feet, not before
Standard Ethernet installations are capped at a maximum total run of 328 feet, a figure set by networking standards to account for signal loss, interference and timing errors rather than an absolute cutoff. That distance typically breaks down into 295 feet of solid-core cable plus up to 33 feet of flexible patch cables at each end. Within that range, Cat5e or Cat6 cabling reliably supports 1 Gbps speeds, and everyday runs of 10 to 100 feet won't cause any slowdown.