| Vermilion to Oerlinghausen | 4,085.81 mi (6,575.48 km) |
| Vermilion to Oestrich-Winkel | 4,127.32 mi (6,642.28 km) |
| Vermilion to Offenburg | 4,177.85 mi (6,723.59 km) |
| Vermilion to Oftersheim | 4,171.72 mi (6,713.74 km) |
| Vermilion to Ohrdruf | 4,202.28 mi (6,762.92 km) |
| Vermilion to Ohringen | 4,213.22 mi (6,780.51 km) |
| Vermilion to Olbernhau | 4,304.83 mi (6,927.95 km) |
| Vermilion to Olching | 4,320.01 mi (6,952.39 km) |
| Vermilion to Oldenburg | 4,030.10 mi (6,485.82 km) |
| Vermilion to Oldenburg in Holstein | 4,087.37 mi (6,577.98 km) |
| Vermilion to Olfen | 4,046.12 mi (6,511.60 km) |
| Vermilion to Olpe | 4,086.43 mi (6,576.47 km) |
| Vermilion to Olsberg | 4,099.75 mi (6,597.92 km) |
| Vermilion to Oranienburg | 4,224.79 mi (6,799.14 km) |
| Vermilion to Ortenberg | 4,155.50 mi (6,687.64 km) |
