| Grenade to Oestrich-Winkel | 533.87 mi (859.18 km) |
| Grenade to Offenburg | 453.96 mi (730.58 km) |
| Grenade to Oftersheim | 518.77 mi (834.87 km) |
| Grenade to Ohrdruf | 657.27 mi (1,057.78 km) |
| Grenade to Ohringen | 540.82 mi (870.37 km) |
| Grenade to Olbernhau | 737.47 mi (1,186.84 km) |
| Grenade to Olching | 569.57 mi (916.63 km) |
| Grenade to Oldenburg | 720.26 mi (1,159.14 km) |
| Grenade to Oldenburg in Holstein | 845.58 mi (1,360.82 km) |
| Grenade to Olfen | 617.09 mi (993.10 km) |
| Grenade to Olpe | 586.14 mi (943.30 km) |
| Grenade to Olsberg | 621.08 mi (999.53 km) |
| Grenade to Oranienburg | 826.72 mi (1,330.48 km) |
| Grenade to Ortenberg | 582.81 mi (937.94 km) |
| Grenade to Oschatz | 756.12 mi (1,216.86 km) |
