| Herceg Novi to Olivenza | 1,364.76 mi (2,196.37 km) |
| Herceg Novi to Olot | 818.58 mi (1,317.37 km) |
| Herceg Novi to Onate | 1,060.94 mi (1,707.42 km) |
| Herceg Novi to Onda | 989.89 mi (1,593.07 km) |
| Herceg Novi to Onteniente | 1,031.87 mi (1,660.64 km) |
| Herceg Novi to Orihuela | 1,067.54 mi (1,718.04 km) |
| Herceg Novi to Osuna | 1,299.65 mi (2,091.58 km) |
| Herceg Novi to Ourense | 1,341.38 mi (2,158.74 km) |
| Herceg Novi to Oviedo | 1,230.84 mi (1,980.85 km) |
| Herceg Novi to Paiporta | 1,008.60 mi (1,623.18 km) |
| Herceg Novi to Pajara | 2,062.15 mi (3,318.71 km) |
| Herceg Novi to Palafolls | 810.14 mi (1,303.79 km) |
| Herceg Novi to Palafrugell | 786.59 mi (1,265.89 km) |
| Herceg Novi to Palamos | 789.02 mi (1,269.81 km) |
| Herceg Novi to Palencia | 1,176.64 mi (1,893.63 km) |
