| McCalla to Octeville | 4,317.95 mi (6,949.06 km) |
| McCalla to Oignies | 4,488.28 mi (7,223.18 km) |
| McCalla to Oissel | 4,439.58 mi (7,144.81 km) |
| McCalla to Olivet | 4,512.88 mi (7,262.78 km) |
| McCalla to Ollioules | 4,824.73 mi (7,764.65 km) |
| McCalla to Olonne-sur-Mer | 4,388.10 mi (7,061.97 km) |
| McCalla to Oloron-Sainte-Marie | 4,529.39 mi (7,289.35 km) |
| McCalla to Onet Village | 4,641.67 mi (7,470.04 km) |
| McCalla to Onnaing | 4,514.97 mi (7,266.15 km) |
| McCalla to Orange | 4,747.35 mi (7,640.12 km) |
| McCalla to Orchies | 4,498.29 mi (7,239.30 km) |
| McCalla to Orleans | 4,512.19 mi (7,261.67 km) |
| McCalla to Orly | 4,509.84 mi (7,257.89 km) |
| McCalla to Ormesson-sur-Marne | 4,514.80 mi (7,265.88 km) |
| McCalla to Orsay | 4,502.47 mi (7,246.02 km) |
