The time to install a fence really depends on the size of project and what style of Ranch Rail fence you prefer. A Split Rail fence has standard posts with standard rails, whereas a Ranch Rail can have a 2, 3, 4, or more planks (or rails) and it can have it crisscross or just plain across. You do have more design control with a Ranch Rail versus a Split Rail so the time that it takes to install is all determined case by case.