Atleast one routing path is defined by MVC framework. You can register a route in RouteConfig class, which is in RouteConfig.cs under App_Start folder.
Route is configured using the MapRoute() extension method of RouteCollection, where name is "Default", url pattern is "{controller}/{action}/{id}" and defaults parameter for controller, action method and id parameter. Defaults specifies which controller, action method or value of id parameter should be used if they do not exist in the incoming request URL.
After configuring all the routes in RouteConfig class, you need to register it in the Application_Start() event in the Global.asax.