| Orbetello to Oerlinghausen | 668.92 mi (1,076.52 km) |
| Orbetello to Oestrich-Winkel | 544.36 mi (876.06 km) |
| Orbetello to Offenburg | 445.63 mi (717.18 km) |
| Orbetello to Oftersheim | 495.20 mi (796.95 km) |
| Orbetello to Ohrdruf | 580.05 mi (933.49 km) |
| Orbetello to Ohringen | 474.30 mi (763.31 km) |
| Orbetello to Olbernhau | 577.25 mi (928.99 km) |
| Orbetello to Olching | 398.05 mi (640.60 km) |
| Orbetello to Oldenburg | 752.42 mi (1,210.90 km) |
| Orbetello to Oldenburg in Holstein | 819.62 mi (1,319.06 km) |
| Orbetello to Olfen | 665.60 mi (1,071.17 km) |
| Orbetello to Olpe | 613.69 mi (987.64 km) |
| Orbetello to Olsberg | 628.88 mi (1,012.09 km) |
| Orbetello to Oranienburg | 718.83 mi (1,156.85 km) |
| Orbetello to Ortenberg | 556.48 mi (895.57 km) |
