| Calera to Octeville | 4,314.32 mi (6,943.23 km) |
| Calera to Oignies | 4,485.38 mi (7,218.53 km) |
| Calera to Oissel | 4,436.10 mi (7,139.21 km) |
| Calera to Olivet | 4,508.95 mi (7,256.45 km) |
| Calera to Ollioules | 4,819.62 mi (7,756.43 km) |
| Calera to Olonne-sur-Mer | 4,383.33 mi (7,054.28 km) |
| Calera to Oloron-Sainte-Marie | 4,523.55 mi (7,279.95 km) |
| Calera to Onet Village | 4,636.59 mi (7,461.86 km) |
| Calera to Onnaing | 4,512.11 mi (7,261.54 km) |
| Calera to Orange | 4,742.45 mi (7,632.23 km) |
| Calera to Orchies | 4,495.42 mi (7,234.69 km) |
| Calera to Orleans | 4,508.27 mi (7,255.36 km) |
| Calera to Orly | 4,506.27 mi (7,252.15 km) |
| Calera to Ormesson-sur-Marne | 4,511.26 mi (7,260.18 km) |
| Calera to Orsay | 4,498.86 mi (7,240.22 km) |
