| Howard to Octeville | 3,849.94 mi (6,195.88 km) |
| Howard to Oignies | 3,994.53 mi (6,428.57 km) |
| Howard to Oissel | 3,964.93 mi (6,380.93 km) |
| Howard to Olivet | 4,051.39 mi (6,520.09 km) |
| Howard to Ollioules | 4,396.49 mi (7,075.47 km) |
| Howard to Olonne-sur-Mer | 3,956.35 mi (6,367.13 km) |
| Howard to Oloron-Sainte-Marie | 4,131.26 mi (6,648.63 km) |
| Howard to Onet Village | 4,215.59 mi (6,784.34 km) |
| Howard to Onnaing | 4,019.93 mi (6,469.45 km) |
| Howard to Orange | 4,313.51 mi (6,941.92 km) |
| Howard to Orchies | 4,003.59 mi (6,443.15 km) |
| Howard to Orleans | 4,050.25 mi (6,518.24 km) |
| Howard to Orly | 4,036.85 mi (6,496.68 km) |
| Howard to Ormesson-sur-Marne | 4,040.80 mi (6,503.04 km) |
| Howard to Orsay | 4,030.76 mi (6,486.87 km) |
