MVC :: Translate URL By Routing?

I use simple default route

routes.MapRoute(
"Default",
"{controller}/{action}/{id}");

The problem is that I want to translate some paths in my language but names of the controllers and actions should be leaved in english. For example I want to map URL "/wydarzenia/4/rejestruj" to "/events/4/register'. I tried

routes.MapRoute(
"Register",
"wydarzenia/{id}/rejestruj",
new { controller = "Events", action = "RegisterToEvent" });

But this doesn't work.