| Reggio Emilia to Olivenza | 1,002.13 mi (1,612.77 km) |
| Reggio Emilia to Olot | 443.81 mi (714.24 km) |
| Reggio Emilia to Onate | 659.43 mi (1,061.25 km) |
| Reggio Emilia to Onda | 644.92 mi (1,037.89 km) |
| Reggio Emilia to Onteniente | 706.45 mi (1,136.91 km) |
| Reggio Emilia to Orihuela | 753.18 mi (1,212.12 km) |
| Reggio Emilia to Osuna | 966.94 mi (1,556.15 km) |
| Reggio Emilia to Ourense | 938.89 mi (1,511.00 km) |
| Reggio Emilia to Oviedo | 822.37 mi (1,323.48 km) |
| Reggio Emilia to Paiporta | 672.93 mi (1,082.97 km) |
| Reggio Emilia to Pajara | 1,765.64 mi (2,841.53 km) |
| Reggio Emilia to Palafolls | 448.68 mi (722.08 km) |
| Reggio Emilia to Palafrugell | 421.70 mi (678.65 km) |
| Reggio Emilia to Palamos | 425.69 mi (685.08 km) |
| Reggio Emilia to Palencia | 782.87 mi (1,259.91 km) |
