| Leer to Oria | 1,000.24 mi (1,609.72 km) |
| Leer to Oristano | 922.22 mi (1,484.18 km) |
| Leer to Orta Nova | 907.36 mi (1,460.25 km) |
| Leer to Orte | 778.06 mi (1,252.17 km) |
| Leer to Ortona | 817.11 mi (1,315.01 km) |
| Leer to Orvieto | 757.21 mi (1,218.60 km) |
| Leer to Orzinuovi | 552.38 mi (888.97 km) |
| Leer to Osimo | 727.54 mi (1,170.86 km) |
| Leer to Ospitaletto | 543.16 mi (874.14 km) |
| Leer to Ostuni | 984.53 mi (1,584.45 km) |
| Leer to Ottaviano | 916.07 mi (1,474.28 km) |
| Leer to Ovada | 596.07 mi (959.28 km) |
| Leer to Ozieri | 876.75 mi (1,411.00 km) |
| Leer to Paceco | 1,081.23 mi (1,740.07 km) |
| Leer to Pachino | 1,199.02 mi (1,929.63 km) |
