| Tomar to Orbetello | 1,039.44 mi (1,672.81 km) |
| Tomar to Oria | 1,374.17 mi (2,211.52 km) |
| Tomar to Oristano | 902.35 mi (1,452.20 km) |
| Tomar to Orta Nova | 1,269.82 mi (2,043.58 km) |
| Tomar to Orte | 1,099.23 mi (1,769.04 km) |
| Tomar to Ortona | 1,201.57 mi (1,933.74 km) |
| Tomar to Orvieto | 1,086.45 mi (1,748.48 km) |
| Tomar to Orzinuovi | 1,014.07 mi (1,631.98 km) |
| Tomar to Osimo | 1,160.21 mi (1,867.19 km) |
| Tomar to Ospitaletto | 1,023.68 mi (1,647.46 km) |
| Tomar to Ostuni | 1,369.99 mi (2,204.79 km) |
| Tomar to Ottaviano | 1,207.39 mi (1,943.11 km) |
| Tomar to Ovada | 938.98 mi (1,511.14 km) |
| Tomar to Ozieri | 921.77 mi (1,483.44 km) |
| Tomar to Paceco | 1,132.05 mi (1,821.86 km) |
