| New Carrollton to Octeville | 3,633.94 mi (5,848.25 km) |
| New Carrollton to Oignies | 3,807.47 mi (6,127.53 km) |
| New Carrollton to Oissel | 3,756.11 mi (6,044.87 km) |
| New Carrollton to Olivet | 3,827.77 mi (6,160.20 km) |
| New Carrollton to Ollioules | 4,137.16 mi (6,658.11 km) |
| New Carrollton to Olonne-sur-Mer | 3,700.97 mi (5,956.13 km) |
| New Carrollton to Oloron-Sainte-Marie | 3,841.60 mi (6,182.46 km) |
| New Carrollton to Onet Village | 3,954.12 mi (6,363.55 km) |
| New Carrollton to Onnaing | 3,834.31 mi (6,170.72 km) |
| New Carrollton to Orange | 4,060.02 mi (6,533.97 km) |
| New Carrollton to Orchies | 3,817.61 mi (6,143.86 km) |
| New Carrollton to Orleans | 3,827.13 mi (6,159.17 km) |
| New Carrollton to Orly | 3,826.01 mi (6,157.37 km) |
| New Carrollton to Ormesson-sur-Marne | 3,831.08 mi (6,165.54 km) |
| New Carrollton to Orsay | 3,818.50 mi (6,145.27 km) |
