Up to 40m you can use HDMI active cables - http://www.purelinkpro.de/Professional-Produkte/AV-Connections/HDMI-Copper-Cables/High-Speed-HDMI-Kabel-Active-Series-v13-v14::558.html
Up to 100 m you can use HDBaseT based extenders - those are getting more and more popular
Those ones have nice price: http://www.cypeurope.com/store/store/app/browse/category/5430/HDMI-Distribution/HDMI-Over-CAT/Single-CAT----up-to-100m/
Over 100m you either have to go with proprietary long range extenders over cat5/6/7 or fiber optics.
Up to 300m this one is very nice: http://www.purelinkpro.de/Professional-Produkte/AV-Connection-Systems/HDMI-Fiber-Optic/FiberX-Series-HDMI-IR-Single-Optical-Fiber-Extender::527.html
It uses only one fiber, but have two way communication.
Regards,
Tom
