| East Providence to Orbetello | 4,048.98 mi (6,516.20 km) |
| East Providence to Oria | 4,401.88 mi (7,084.15 km) |
| East Providence to Oristano | 4,018.91 mi (6,467.81 km) |
| East Providence to Orta Nova | 4,286.49 mi (6,898.43 km) |
| East Providence to Orte | 4,099.93 mi (6,598.20 km) |
| East Providence to Ortona | 4,191.91 mi (6,746.23 km) |
| East Providence to Orvieto | 4,078.81 mi (6,564.21 km) |
| East Providence to Orzinuovi | 3,894.40 mi (6,267.44 km) |
| East Providence to Osimo | 4,111.82 mi (6,617.33 km) |
| East Providence to Ospitaletto | 3,895.41 mi (6,269.06 km) |
| East Providence to Ostuni | 4,390.76 mi (7,066.24 km) |
| East Providence to Ottaviano | 4,250.03 mi (6,839.77 km) |
| East Providence to Ovada | 3,863.14 mi (6,217.13 km) |
| East Providence to Ozieri | 4,014.12 mi (6,460.10 km) |
| East Providence to Paceco | 4,269.64 mi (6,871.32 km) |
