| Mandan to Octeville | 4,216.40 mi (6,785.65 km) |
| Mandan to Oignies | 4,334.87 mi (6,976.31 km) |
| Mandan to Oissel | 4,322.79 mi (6,956.86 km) |
| Mandan to Olivet | 4,418.19 mi (7,110.39 km) |
| Mandan to Ollioules | 4,781.95 mi (7,695.80 km) |
| Mandan to Olonne-sur-Mer | 4,349.32 mi (6,999.55 km) |
| Mandan to Oloron-Sainte-Marie | 4,545.22 mi (7,314.83 km) |
| Mandan to Onet Village | 4,606.82 mi (7,413.95 km) |
| Mandan to Onnaing | 4,358.45 mi (7,014.25 km) |
| Mandan to Orange | 4,696.45 mi (7,558.21 km) |
| Mandan to Orchies | 4,342.85 mi (6,989.14 km) |
| Mandan to Orleans | 4,416.69 mi (7,107.98 km) |
| Mandan to Orly | 4,394.31 mi (7,071.95 km) |
| Mandan to Ormesson-sur-Marne | 4,397.29 mi (7,076.76 km) |
| Mandan to Orsay | 4,389.46 mi (7,064.15 km) |
