| Korydallos to Oerlinghausen | 1,207.31 mi (1,942.98 km) |
| Korydallos to Oestrich-Winkel | 1,133.26 mi (1,823.81 km) |
| Korydallos to Offenburg | 1,068.90 mi (1,720.22 km) |
| Korydallos to Oftersheim | 1,085.01 mi (1,746.15 km) |
| Korydallos to Ohrdruf | 1,089.36 mi (1,753.15 km) |
| Korydallos to Ohringen | 1,046.35 mi (1,683.94 km) |
| Korydallos to Olbernhau | 1,011.71 mi (1,628.18 km) |
| Korydallos to Olching | 938.68 mi (1,510.66 km) |
| Korydallos to Oldenburg | 1,280.48 mi (2,060.73 km) |
| Korydallos to Oldenburg in Holstein | 1,277.86 mi (2,056.52 km) |
| Korydallos to Olfen | 1,233.31 mi (1,984.83 km) |
| Korydallos to Olpe | 1,185.90 mi (1,908.52 km) |
| Korydallos to Olsberg | 1,181.89 mi (1,902.06 km) |
| Korydallos to Oranienburg | 1,136.19 mi (1,828.52 km) |
| Korydallos to Ortenberg | 1,115.69 mi (1,795.53 km) |
