| Crystal to Octeville | 4,028.73 mi (6,483.61 km) |
| Crystal to Oignies | 4,164.02 mi (6,701.34 km) |
| Crystal to Oissel | 4,140.85 mi (6,664.05 km) |
| Crystal to Olivet | 4,230.85 mi (6,808.89 km) |
| Crystal to Ollioules | 4,583.60 mi (7,376.59 km) |
| Crystal to Olonne-sur-Mer | 4,145.15 mi (6,670.97 km) |
| Crystal to Oloron-Sainte-Marie | 4,328.06 mi (6,965.33 km) |
| Crystal to Onet Village | 4,404.38 mi (7,088.16 km) |
| Crystal to Onnaing | 4,188.81 mi (6,741.24 km) |
| Crystal to Orange | 4,499.51 mi (7,241.27 km) |
| Crystal to Orchies | 4,172.70 mi (6,715.31 km) |
| Crystal to Orleans | 4,229.57 mi (6,806.83 km) |
| Crystal to Orly | 4,212.82 mi (6,779.87 km) |
| Crystal to Ormesson-sur-Marne | 4,216.42 mi (6,785.67 km) |
| Crystal to Orsay | 4,207.17 mi (6,770.78 km) |
