| Chambersburg to Oerlinghausen | 3,979.54 mi (6,404.45 km) |
| Chambersburg to Oestrich-Winkel | 4,011.52 mi (6,455.91 km) |
| Chambersburg to Offenburg | 4,055.44 mi (6,526.61 km) |
| Chambersburg to Oftersheim | 4,054.10 mi (6,524.44 km) |
| Chambersburg to Ohrdruf | 4,094.04 mi (6,588.73 km) |
| Chambersburg to Ohringen | 4,096.25 mi (6,592.27 km) |
| Chambersburg to Olbernhau | 4,199.87 mi (6,759.03 km) |
| Chambersburg to Olching | 4,201.75 mi (6,762.06 km) |
| Chambersburg to Oldenburg | 3,928.49 mi (6,322.30 km) |
| Chambersburg to Oldenburg in Holstein | 3,994.59 mi (6,428.67 km) |
| Chambersburg to Olfen | 3,936.96 mi (6,335.93 km) |
| Chambersburg to Olpe | 3,974.80 mi (6,396.82 km) |
| Chambersburg to Olsberg | 3,990.51 mi (6,422.10 km) |
| Chambersburg to Oranienburg | 4,128.52 mi (6,644.21 km) |
| Chambersburg to Ortenberg | 4,042.77 mi (6,506.21 km) |
