| Birecik to Oerlinghausen | 1,756.06 mi (2,826.10 km) |
| Birecik to Oestrich-Winkel | 1,731.92 mi (2,787.25 km) |
| Birecik to Offenburg | 1,701.90 mi (2,738.95 km) |
| Birecik to Oftersheim | 1,692.82 mi (2,724.32 km) |
| Birecik to Ohrdruf | 1,642.28 mi (2,643.00 km) |
| Birecik to Ohringen | 1,650.00 mi (2,655.41 km) |
| Birecik to Olbernhau | 1,535.66 mi (2,471.41 km) |
| Birecik to Olching | 1,548.54 mi (2,492.13 km) |
| Birecik to Oldenburg | 1,807.91 mi (2,909.56 km) |
| Birecik to Oldenburg in Holstein | 1,750.99 mi (2,817.95 km) |
| Birecik to Olfen | 1,799.52 mi (2,896.05 km) |
| Birecik to Olpe | 1,763.48 mi (2,838.05 km) |
| Birecik to Olsberg | 1,746.13 mi (2,810.13 km) |
| Birecik to Oranienburg | 1,612.31 mi (2,594.76 km) |
| Birecik to Ortenberg | 1,696.93 mi (2,730.94 km) |
