Originally Posted by
evilcryalotmore
I've heard as early as damage appears or 75%
I've changed my chain only twice on my hour.
I've had it for 3 years about.
It depends on what chain you ride, and how clean & lubed you keep it. For instance, I ride a Izumi Super Toughness. I clean it often. It will last for a looooong time. There is no magic number.