| Front Royal to Octeville | 3,690.84 mi (5,939.83 km) |
| Front Royal to Oignies | 3,862.71 mi (6,216.44 km) |
| Front Royal to Oissel | 3,812.70 mi (6,135.95 km) |
| Front Royal to Olivet | 3,885.38 mi (6,252.92 km) |
| Front Royal to Ollioules | 4,197.23 mi (6,754.79 km) |
| Front Royal to Olonne-sur-Mer | 3,760.37 mi (6,051.73 km) |
| Front Royal to Oloron-Sainte-Marie | 3,903.11 mi (6,281.45 km) |
| Front Royal to Onet Village | 4,014.15 mi (6,460.14 km) |
| Front Royal to Onnaing | 3,889.49 mi (6,259.53 km) |
| Front Royal to Orange | 4,119.68 mi (6,629.99 km) |
| Front Royal to Orchies | 3,872.80 mi (6,232.67 km) |
| Front Royal to Orleans | 3,884.71 mi (6,251.83 km) |
| Front Royal to Orly | 3,882.82 mi (6,248.79 km) |
| Front Royal to Ormesson-sur-Marne | 3,887.83 mi (6,256.85 km) |
| Front Royal to Orsay | 3,875.38 mi (6,236.83 km) |
