| North Las Vegas to Octeville | 5,246.07 mi (8,442.74 km) |
| North Las Vegas to Oignies | 5,360.68 mi (8,627.19 km) |
| North Las Vegas to Oissel | 5,351.33 mi (8,612.14 km) |
| North Las Vegas to Olivet | 5,447.64 mi (8,767.12 km) |
| North Las Vegas to Ollioules | 5,812.59 mi (9,354.46 km) |
| North Las Vegas to Olonne-sur-Mer | 5,380.40 mi (8,658.92 km) |
| North Las Vegas to Oloron-Sainte-Marie | 5,575.92 mi (8,973.58 km) |
| North Las Vegas to Onet Village | 5,637.80 mi (9,073.15 km) |
| North Las Vegas to Onnaing | 5,383.86 mi (8,664.49 km) |
| North Las Vegas to Orange | 5,727.00 mi (9,216.71 km) |
| North Las Vegas to Orchies | 5,368.44 mi (8,639.66 km) |
| North Las Vegas to Orleans | 5,446.10 mi (8,764.66 km) |
| North Las Vegas to Orly | 5,422.68 mi (8,726.95 km) |
| North Las Vegas to Ormesson-sur-Marne | 5,425.53 mi (8,731.54 km) |
| North Las Vegas to Orsay | 5,418.00 mi (8,719.43 km) |
