| Swallownest to Oerlinghausen | 429.27 mi (690.84 km) |
| Swallownest to Oestrich-Winkel | 461.61 mi (742.88 km) |
| Swallownest to Offenburg | 525.66 mi (845.96 km) |
| Swallownest to Oftersheim | 508.04 mi (817.62 km) |
| Swallownest to Ohrdruf | 540.16 mi (869.30 km) |
| Swallownest to Ohringen | 548.30 mi (882.41 km) |
| Swallownest to Olbernhau | 649.23 mi (1,044.83 km) |
| Swallownest to Olching | 656.01 mi (1,055.75 km) |
| Swallownest to Oldenburg | 394.31 mi (634.58 km) |
| Swallownest to Oldenburg in Holstein | 501.37 mi (806.88 km) |
| Swallownest to Olfen | 382.93 mi (616.26 km) |
| Swallownest to Olpe | 420.03 mi (675.98 km) |
| Swallownest to Olsberg | 436.21 mi (702.01 km) |
| Swallownest to Oranienburg | 605.09 mi (973.80 km) |
| Swallownest to Ortenberg | 488.63 mi (786.38 km) |
