| Kouvola to Navodari | 1,145.97 mi (1,844.26 km) |
| Kouvola to Negresti-Oas | 907.49 mi (1,460.47 km) |
| Kouvola to Nehoiu | 1,072.11 mi (1,725.39 km) |
| Kouvola to Ocna Mures | 1,006.87 mi (1,620.40 km) |
| Kouvola to Odobesti | 1,043.51 mi (1,679.37 km) |
| Kouvola to Odorheiu Secuiesc | 1,007.18 mi (1,620.91 km) |
| Kouvola to Oltenita | 1,159.49 mi (1,866.01 km) |
| Kouvola to Onesti | 1,009.42 mi (1,624.51 km) |
| Kouvola to Oradea | 972.19 mi (1,564.58 km) |
| Kouvola to Orastie | 1,047.29 mi (1,685.45 km) |
| Kouvola to Oravita | 1,112.58 mi (1,790.52 km) |
| Kouvola to Orsova | 1,129.19 mi (1,817.26 km) |
| Kouvola to Otelu Rosu | 1,075.15 mi (1,730.29 km) |
| Kouvola to Otopeni | 1,127.77 mi (1,814.97 km) |
| Kouvola to Ovidiu | 1,149.35 mi (1,849.70 km) |
