| Karnobat to Novi di Modena | 816.12 mi (1,313.41 km) |
| Karnobat to Novi Ligure | 918.86 mi (1,478.76 km) |
| Karnobat to Nuoro | 925.84 mi (1,490.00 km) |
| Karnobat to Occhiobello | 783.20 mi (1,260.43 km) |
| Karnobat to Oderzo | 748.68 mi (1,204.89 km) |
| Karnobat to Oggiono | 897.99 mi (1,445.17 km) |
| Karnobat to Olbia | 906.99 mi (1,459.65 km) |
| Karnobat to Oleggio | 930.80 mi (1,497.97 km) |
| Karnobat to Olgiate Comasco | 916.30 mi (1,474.64 km) |
| Karnobat to Olgiate Olona | 919.04 mi (1,479.06 km) |
| Karnobat to Omegna | 943.86 mi (1,518.99 km) |
| Karnobat to Opera | 901.13 mi (1,450.22 km) |
| Karnobat to Oppeano | 805.61 mi (1,296.50 km) |
| Karnobat to Orbassano | 980.75 mi (1,578.36 km) |
| Karnobat to Orbetello | 801.86 mi (1,290.47 km) |
