| Apex to Oerlinghausen | 4,230.32 mi (6,808.04 km) |
| Apex to Oestrich-Winkel | 4,255.67 mi (6,848.84 km) |
| Apex to Offenburg | 4,294.63 mi (6,911.54 km) |
| Apex to Oftersheim | 4,296.81 mi (6,915.05 km) |
| Apex to Ohrdruf | 4,343.19 mi (6,989.69 km) |
| Apex to Ohringen | 4,339.31 mi (6,983.44 km) |
| Apex to Olbernhau | 4,450.90 mi (7,163.03 km) |
| Apex to Olching | 4,443.56 mi (7,151.22 km) |
| Apex to Oldenburg | 4,182.42 mi (6,730.96 km) |
| Apex to Oldenburg in Holstein | 4,253.73 mi (6,845.72 km) |
| Apex to Olfen | 4,185.94 mi (6,736.63 km) |
| Apex to Olpe | 4,221.99 mi (6,794.63 km) |
| Apex to Olsberg | 4,239.27 mi (6,822.45 km) |
| Apex to Oranienburg | 4,385.23 mi (7,057.35 km) |
| Apex to Ortenberg | 4,288.99 mi (6,902.46 km) |
