| Martinsburg to Octeville | 3,659.44 mi (5,889.30 km) |
| Martinsburg to Oignies | 3,830.47 mi (6,164.55 km) |
| Martinsburg to Oissel | 3,781.14 mi (6,085.15 km) |
| Martinsburg to Olivet | 3,854.37 mi (6,203.00 km) |
| Martinsburg to Ollioules | 4,167.71 mi (6,707.28 km) |
| Martinsburg to Olonne-sur-Mer | 3,730.44 mi (6,003.56 km) |
| Martinsburg to Oloron-Sainte-Marie | 3,874.63 mi (6,235.61 km) |
| Martinsburg to Onet Village | 3,984.60 mi (6,412.59 km) |
| Martinsburg to Onnaing | 3,857.21 mi (6,207.58 km) |
| Martinsburg to Orange | 4,089.89 mi (6,582.04 km) |
| Martinsburg to Orchies | 3,840.52 mi (6,180.73 km) |
| Martinsburg to Orleans | 3,853.67 mi (6,201.89 km) |
| Martinsburg to Orly | 3,851.36 mi (6,198.17 km) |
| Martinsburg to Ormesson-sur-Marne | 3,856.33 mi (6,206.17 km) |
| Martinsburg to Orsay | 3,843.97 mi (6,186.27 km) |
