Kinmen is 198 miles from Keelung in the north, 82 miles west of the Penghu Islands and 160 miles from Kaohsiung in southern Taiwan. The shortest distance to mainland China is 2,310 meters, somewhere near Ma-shan.
東距基隆一百九十八浬，東南距澎湖八十二浬，距高雄一百六十浬，西距廈門約一十八浬，與共軍前哨距離最近處為自馬山至角嶼，僅有二千三百一十公尺。