| Mandan to Oerlinghausen | 4,444.00 mi (7,151.93 km) |
| Mandan to Oestrich-Winkel | 4,518.49 mi (7,271.81 km) |
| Mandan to Offenburg | 4,591.05 mi (7,388.57 km) |
| Mandan to Oftersheim | 4,567.69 mi (7,350.99 km) |
| Mandan to Ohrdruf | 4,562.58 mi (7,342.77 km) |
| Mandan to Ohringen | 4,605.05 mi (7,411.11 km) |
| Mandan to Olbernhau | 4,648.72 mi (7,481.39 km) |
| Mandan to Olching | 4,712.22 mi (7,583.59 km) |
| Mandan to Oldenburg | 4,373.83 mi (7,038.99 km) |
| Mandan to Oldenburg in Holstein | 4,396.30 mi (7,075.17 km) |
| Mandan to Olfen | 4,416.59 mi (7,107.81 km) |
| Mandan to Olpe | 4,464.12 mi (7,184.30 km) |
| Mandan to Olsberg | 4,468.18 mi (7,190.84 km) |
| Mandan to Oranienburg | 4,540.24 mi (7,306.81 km) |
| Mandan to Ortenberg | 4,534.26 mi (7,297.19 km) |
