| Hatfield to Octeville | 160.13 mi (257.70 km) |
| Hatfield to Oignies | 165.80 mi (266.82 km) |
| Hatfield to Oissel | 177.03 mi (284.89 km) |
| Hatfield to Olivet | 285.60 mi (459.63 km) |
| Hatfield to Ollioules | 659.42 mi (1,061.23 km) |
| Hatfield to Olonne-sur-Mer | 367.87 mi (592.02 km) |
| Hatfield to Oloron-Sainte-Marie | 592.35 mi (953.30 km) |
| Hatfield to Onet Village | 527.36 mi (848.71 km) |
| Hatfield to Onnaing | 191.25 mi (307.79 km) |
| Hatfield to Orange | 575.75 mi (926.57 km) |
| Hatfield to Orchies | 174.84 mi (281.38 km) |
| Hatfield to Orleans | 283.20 mi (455.77 km) |
| Hatfield to Orly | 238.53 mi (383.87 km) |
| Hatfield to Ormesson-sur-Marne | 239.19 mi (384.93 km) |
| Hatfield to Orsay | 237.11 mi (381.60 km) |
