| Ourem to Orbetello | 1,046.05 mi (1,683.45 km) |
| Ourem to Oria | 1,381.35 mi (2,223.07 km) |
| Ourem to Oristano | 909.88 mi (1,464.31 km) |
| Ourem to Orta Nova | 1,276.81 mi (2,054.83 km) |
| Ourem to Orte | 1,105.86 mi (1,779.70 km) |
| Ourem to Ortona | 1,208.25 mi (1,944.50 km) |
| Ourem to Orvieto | 1,092.98 mi (1,758.98 km) |
| Ourem to Orzinuovi | 1,019.36 mi (1,640.50 km) |
| Ourem to Osimo | 1,166.49 mi (1,877.29 km) |
| Ourem to Ospitaletto | 1,028.92 mi (1,655.89 km) |
| Ourem to Ostuni | 1,377.12 mi (2,216.25 km) |
| Ourem to Ottaviano | 1,214.53 mi (1,954.60 km) |
| Ourem to Ovada | 944.51 mi (1,520.04 km) |
| Ourem to Ozieri | 929.05 mi (1,495.16 km) |
| Ourem to Paceco | 1,139.97 mi (1,834.61 km) |
