| Los Alamos to Octeville | 4,954.02 mi (7,972.72 km) |
| Los Alamos to Oignies | 5,086.98 mi (8,186.70 km) |
| Los Alamos to Oissel | 5,065.59 mi (8,152.28 km) |
| Los Alamos to Olivet | 5,156.18 mi (8,298.06 km) |
| Los Alamos to Ollioules | 5,509.32 mi (8,866.39 km) |
| Los Alamos to Olonne-sur-Mer | 5,070.73 mi (8,160.56 km) |
| Los Alamos to Oloron-Sainte-Marie | 5,252.12 mi (8,452.46 km) |
| Los Alamos to Onet Village | 5,329.99 mi (8,577.79 km) |
| Los Alamos to Onnaing | 5,111.54 mi (8,226.23 km) |
| Los Alamos to Orange | 5,425.25 mi (8,731.10 km) |
| Los Alamos to Orchies | 5,095.52 mi (8,200.45 km) |
| Los Alamos to Orleans | 5,154.88 mi (8,295.98 km) |
| Los Alamos to Orly | 5,137.54 mi (8,268.07 km) |
| Los Alamos to Ormesson-sur-Marne | 5,141.07 mi (8,273.75 km) |
| Los Alamos to Orsay | 5,131.99 mi (8,259.13 km) |
