Not very far. If your cable runs or more than 100' or so, you're going to see some loss. I wouldn't dare go more than 150' on any run.
Keep in mind, that distance includes traveling inside your walls and such to get to your TV once the lines go into the house. That alone can add 50-75 feet to the run.
Keep in mind, that distance includes traveling inside your walls and such to get to your TV once the lines go into the house. That alone can add 50-75 feet to the run.