Yes, Ethernet cables have a rated distance limit beyond which the transfer speeds tend to fall off significantly. For instance, Cat7 cables can transfer up to 100 Gbps, as long as the cable length is within 15 meters or 50 feet. Distance limits for Cat6 or Cat5 are more relaxed and can retain most of their speed until around 100 meters or 300 feet. In practice, you'll rarely find cable lengths reaching 300 feet in home setups. Therefore, speed reduction due to distance isn't as much of an issue.