Show Infinite Land Area for Earth

How can I display infinite land area in scene? Following screenshot properly explains you, my problem.

In above screenshot, land does not ended but camera viewing capacity get ended though I have set Clipping Planes Far value to 5000 units. Then also this kind of problem get created.
So what to do to show land area at infinite horizon?

You cannot do that. Computers are not capable of infinite distance rendering. You can import Unity postprocesing stack Unity Asset Store - The Best Assets for Game Making and use fog to make it look like it goes to infinity.