Distance between Ongjin-gun and Sumoto is 831.69 km.
This distance is equal to 516.79 miles, and 448.78 nautical miles.
The distance line on map shows distance from Ongjin-gun to Sumoto between two cities.
If you travel with an airplane (which has average speed of 560 miles) between Ongjin-gun to Sumoto,
It takes 0.92 hours to arrive.