| Ottaviano to Olivenza | 1,152.72 mi (1,855.12 km) |
| Ottaviano to Olot | 626.48 mi (1,008.22 km) |
| Ottaviano to Onate | 879.69 mi (1,415.72 km) |
| Ottaviano to Onda | 777.08 mi (1,250.58 km) |
| Ottaviano to Onteniente | 811.43 mi (1,305.87 km) |
| Ottaviano to Orihuela | 843.38 mi (1,357.29 km) |
| Ottaviano to Osuna | 1,077.42 mi (1,733.95 km) |
| Ottaviano to Ourense | 1,155.64 mi (1,859.82 km) |
| Ottaviano to Oviedo | 1,053.38 mi (1,695.25 km) |
| Ottaviano to Paiporta | 791.94 mi (1,274.50 km) |
| Ottaviano to Pajara | 1,828.67 mi (2,942.95 km) |
| Ottaviano to Palafolls | 611.23 mi (983.69 km) |
| Ottaviano to Palafrugell | 590.72 mi (950.68 km) |
| Ottaviano to Palamos | 592.21 mi (953.07 km) |
| Ottaviano to Palencia | 986.03 mi (1,586.87 km) |
