| Hilsea to Oerlinghausen | 426.67 mi (686.65 km) |
| Hilsea to Oestrich-Winkel | 403.16 mi (648.83 km) |
| Hilsea to Offenburg | 434.26 mi (698.87 km) |
| Hilsea to Oftersheim | 439.26 mi (706.93 km) |
| Hilsea to Ohrdruf | 514.55 mi (828.08 km) |
| Hilsea to Ohringen | 482.15 mi (775.95 km) |
| Hilsea to Olbernhau | 628.78 mi (1,011.92 km) |
| Hilsea to Olching | 583.78 mi (939.50 km) |
| Hilsea to Oldenburg | 425.76 mi (685.20 km) |
| Hilsea to Oldenburg in Holstein | 555.40 mi (893.83 km) |
| Hilsea to Olfen | 370.28 mi (595.90 km) |
| Hilsea to Olpe | 387.75 mi (624.02 km) |
| Hilsea to Olsberg | 415.84 mi (669.24 km) |
| Hilsea to Oranienburg | 624.58 mi (1,005.16 km) |
| Hilsea to Ortenberg | 444.97 mi (716.12 km) |
