Mongolia's Distance to the Pacific Ocean: ~850 Miles to Coast

Mongolia is landlocked — no coastline. The shortest distance to the Pacific Ocean is to the Chinese coast (Bohai Sea/Yellow Sea).

Shortest Route

From eastern Mongolia (e.g., Choibalsan) to Tianjin/Qinhuangdao, China (Bohai Sea): ~1,370 km (850 miles).
From Ulaanbaatar: ~1,550 km (960 miles) to Bohai Sea.
To Sea of Japan (East Sea): ~1,800 km (1,120 miles) via China/Russia.

Mongolia's foreign trade relies on Chinese ports (Tianjin, Qingdao) and Russian ports (Vladivostok, Nakhodka) via Trans-Mongolian Railway.
Distance to Arctic Ocean (via Russia) is similar (~2,500 km).

So while Mongolia has no ocean access, it's closer to the Pacific than to the Arctic or Indian Oceans.

Asia