Like many audio, video, and data cables, HDMI cords can suffer from signal degradation at longer lengths—50 feet is generally considered the maximum reliable length. And it’s rare to see an HDMI cable longer than 25 feet in a store. Even online, cables more than 50 feet long can be hard to find.
Does length affect HDMI quality?
Does HDMI lose signal over distance?
How long can a HDMI cable be 1080p?
TLDR: Most standard high-quality HDMI cables have a maximum length of 50 feet. Using an HDMI Signal Booster will let you daisy-chain HDMI cables together, but not without drawbacks. Alternatively, using an Ethernet to HDMI extender will send HDMI signals up to 300 feet.