| Chambersburg to Octeville | 3,625.88 mi (5,835.29 km) |
| Chambersburg to Oignies | 3,796.32 mi (6,109.58 km) |
| Chambersburg to Oissel | 3,747.45 mi (6,030.94 km) |
| Chambersburg to Olivet | 3,821.07 mi (6,149.41 km) |
| Chambersburg to Ollioules | 4,135.47 mi (6,655.40 km) |
| Chambersburg to Olonne-sur-Mer | 3,697.92 mi (5,951.23 km) |
| Chambersburg to Oloron-Sainte-Marie | 3,843.18 mi (6,185.01 km) |
| Chambersburg to Onet Village | 3,952.36 mi (6,360.70 km) |
| Chambersburg to Onnaing | 3,823.04 mi (6,152.59 km) |
| Chambersburg to Orange | 4,057.46 mi (6,529.86 km) |
| Chambersburg to Orchies | 3,806.35 mi (6,125.73 km) |
| Chambersburg to Orleans | 3,820.36 mi (6,148.28 km) |
| Chambersburg to Orly | 3,817.75 mi (6,144.08 km) |
| Chambersburg to Ormesson-sur-Marne | 3,822.70 mi (6,152.04 km) |
| Chambersburg to Orsay | 3,810.39 mi (6,132.23 km) |
