| Koyulhisar to Nasaud | 823.17 mi (1,324.77 km) |
| Koyulhisar to Navodari | 546.11 mi (878.88 km) |
| Koyulhisar to Negresti-Oas | 883.28 mi (1,421.49 km) |
| Koyulhisar to Nehoiu | 679.27 mi (1,093.17 km) |
| Koyulhisar to Ocna Mures | 816.47 mi (1,313.98 km) |
| Koyulhisar to Odobesti | 660.81 mi (1,063.48 km) |
| Koyulhisar to Odorheiu Secuiesc | 753.03 mi (1,211.89 km) |
| Koyulhisar to Oltenita | 629.04 mi (1,012.35 km) |
| Koyulhisar to Onesti | 690.85 mi (1,111.82 km) |
| Koyulhisar to Oradea | 919.63 mi (1,480.00 km) |
| Koyulhisar to Orastie | 830.08 mi (1,335.89 km) |
| Koyulhisar to Oravita | 881.09 mi (1,417.97 km) |
| Koyulhisar to Orsova | 841.64 mi (1,354.49 km) |
| Koyulhisar to Otelu Rosu | 860.21 mi (1,384.37 km) |
| Koyulhisar to Otopeni | 666.79 mi (1,073.09 km) |
