| Gagnef to Oerlinghausen | 644.55 mi (1,037.31 km) |
| Gagnef to Oestrich-Winkel | 782.52 mi (1,259.35 km) |
| Gagnef to Offenburg | 884.74 mi (1,423.85 km) |
| Gagnef to Oftersheim | 816.58 mi (1,314.15 km) |
| Gagnef to Ohrdruf | 695.70 mi (1,119.63 km) |
| Gagnef to Ohringen | 817.58 mi (1,315.77 km) |
| Gagnef to Olbernhau | 689.65 mi (1,109.88 km) |
| Gagnef to Olching | 869.69 mi (1,399.63 km) |
| Gagnef to Oldenburg | 576.07 mi (927.10 km) |
| Gagnef to Oldenburg in Holstein | 462.21 mi (743.86 km) |
| Gagnef to Olfen | 680.49 mi (1,095.14 km) |
| Gagnef to Olpe | 718.48 mi (1,156.28 km) |
| Gagnef to Olsberg | 687.35 mi (1,106.19 km) |
| Gagnef to Oranienburg | 546.53 mi (879.56 km) |
| Gagnef to Ortenberg | 745.37 mi (1,199.56 km) |
