| Gallatin to Oerlinghausen | 4,490.46 mi (7,226.70 km) |
| Gallatin to Oestrich-Winkel | 4,528.55 mi (7,287.99 km) |
| Gallatin to Offenburg | 4,576.33 mi (7,364.89 km) |
| Gallatin to Oftersheim | 4,572.24 mi (7,358.31 km) |
| Gallatin to Ohrdruf | 4,606.34 mi (7,413.19 km) |
| Gallatin to Ohringen | 4,614.03 mi (7,425.56 km) |
| Gallatin to Olbernhau | 4,710.03 mi (7,580.05 km) |
| Gallatin to Olching | 4,720.35 mi (7,596.67 km) |
| Gallatin to Oldenburg | 4,436.18 mi (7,139.34 km) |
| Gallatin to Oldenburg in Holstein | 4,495.83 mi (7,235.34 km) |
| Gallatin to Olfen | 4,449.77 mi (7,161.22 km) |
| Gallatin to Olpe | 4,489.22 mi (7,224.70 km) |
| Gallatin to Olsberg | 4,503.41 mi (7,247.53 km) |
| Gallatin to Oranienburg | 4,632.45 mi (7,455.20 km) |
| Gallatin to Ortenberg | 4,557.93 mi (7,335.28 km) |
