| Willimantic to Octeville | 3,323.41 mi (5,348.52 km) |
| Willimantic to Oignies | 3,496.92 mi (5,627.74 km) |
| Willimantic to Oissel | 3,445.54 mi (5,545.06 km) |
| Willimantic to Olivet | 3,517.43 mi (5,660.76 km) |
| Willimantic to Ollioules | 3,828.35 mi (6,161.14 km) |
| Willimantic to Olonne-sur-Mer | 3,391.59 mi (5,458.24 km) |
| Willimantic to Oloron-Sainte-Marie | 3,534.48 mi (5,688.20 km) |
| Willimantic to Onet Village | 3,645.27 mi (5,866.50 km) |
| Willimantic to Onnaing | 3,523.76 mi (5,670.94 km) |
| Willimantic to Orange | 3,750.85 mi (6,036.41 km) |
| Willimantic to Orchies | 3,507.06 mi (5,644.07 km) |
| Willimantic to Orleans | 3,516.78 mi (5,659.71 km) |
| Willimantic to Orly | 3,515.48 mi (5,657.61 km) |
| Willimantic to Ormesson-sur-Marne | 3,520.54 mi (5,665.76 km) |
| Willimantic to Orsay | 3,507.97 mi (5,645.54 km) |
