| Gragnano to Oerlinghausen | 826.56 mi (1,330.21 km) |
| Gragnano to Oestrich-Winkel | 715.83 mi (1,152.02 km) |
| Gragnano to Offenburg | 626.52 mi (1,008.28 km) |
| Gragnano to Oftersheim | 665.16 mi (1,070.46 km) |
| Gragnano to Ohrdruf | 723.18 mi (1,163.85 km) |
| Gragnano to Ohringen | 636.36 mi (1,024.12 km) |
| Gragnano to Olbernhau | 691.26 mi (1,112.48 km) |
| Gragnano to Olching | 541.84 mi (872.01 km) |
| Gragnano to Oldenburg | 909.17 mi (1,463.17 km) |
| Gragnano to Oldenburg in Holstein | 954.81 mi (1,536.61 km) |
| Gragnano to Olfen | 833.39 mi (1,341.22 km) |
| Gragnano to Olpe | 781.47 mi (1,257.65 km) |
| Gragnano to Olsberg | 790.31 mi (1,271.88 km) |
| Gragnano to Oranienburg | 835.34 mi (1,344.35 km) |
| Gragnano to Ortenberg | 717.38 mi (1,154.51 km) |
