| Kalamaria to Oerlinghausen | 1,037.35 mi (1,669.45 km) |
| Kalamaria to Oestrich-Winkel | 972.12 mi (1,564.48 km) |
| Kalamaria to Offenburg | 915.95 mi (1,474.07 km) |
| Kalamaria to Oftersheim | 925.44 mi (1,489.35 km) |
| Kalamaria to Ohrdruf | 918.71 mi (1,478.51 km) |
| Kalamaria to Ohringen | 885.23 mi (1,424.65 km) |
| Kalamaria to Olbernhau | 835.91 mi (1,345.27 km) |
| Kalamaria to Olching | 777.44 mi (1,251.16 km) |
| Kalamaria to Oldenburg | 1,108.06 mi (1,783.24 km) |
| Kalamaria to Oldenburg in Holstein | 1,099.35 mi (1,769.24 km) |
| Kalamaria to Olfen | 1,066.64 mi (1,716.59 km) |
| Kalamaria to Olpe | 1,020.87 mi (1,642.93 km) |
| Kalamaria to Olsberg | 1,014.29 mi (1,632.34 km) |
| Kalamaria to Oranienburg | 956.82 mi (1,539.85 km) |
| Kalamaria to Ortenberg | 950.55 mi (1,529.76 km) |
