| Sermoneta to Oerlinghausen | 747.82 mi (1,203.50 km) |
| Sermoneta to Oestrich-Winkel | 630.94 mi (1,015.40 km) |
| Sermoneta to Offenburg | 537.52 mi (865.05 km) |
| Sermoneta to Oftersheim | 580.62 mi (934.42 km) |
| Sermoneta to Ohrdruf | 649.95 mi (1,045.99 km) |
| Sermoneta to Ohringen | 554.78 mi (892.84 km) |
| Sermoneta to Olbernhau | 630.12 mi (1,014.09 km) |
| Sermoneta to Olching | 466.63 mi (750.97 km) |
| Sermoneta to Oldenburg | 831.12 mi (1,337.56 km) |
| Sermoneta to Oldenburg in Holstein | 886.19 mi (1,426.18 km) |
| Sermoneta to Olfen | 750.46 mi (1,207.75 km) |
| Sermoneta to Olpe | 698.35 mi (1,123.88 km) |
| Sermoneta to Olsberg | 709.84 mi (1,142.38 km) |
| Sermoneta to Oranienburg | 774.24 mi (1,246.02 km) |
| Sermoneta to Ortenberg | 636.77 mi (1,024.79 km) |
