| Chambersburg to Nuth | 3,900.43 mi (6,277.14 km) |
| Chambersburg to Oegstgeest | 3,810.14 mi (6,131.83 km) |
| Chambersburg to Oirschot | 3,861.19 mi (6,213.98 km) |
| Chambersburg to Oisterwijk | 3,854.97 mi (6,203.98 km) |
| Chambersburg to Oldebroek | 3,858.95 mi (6,210.38 km) |
| Chambersburg to Oldenzaal | 3,902.61 mi (6,280.64 km) |
| Chambersburg to Ommen | 3,877.14 mi (6,239.65 km) |
| Chambersburg to Oosterend | 3,850.51 mi (6,196.80 km) |
| Chambersburg to Oosterhout | 3,839.81 mi (6,179.57 km) |
| Chambersburg to Oosterwolde | 3,859.49 mi (6,211.26 km) |
| Chambersburg to Oostzaan | 3,819.88 mi (6,147.50 km) |
| Chambersburg to Opmeer | 3,815.48 mi (6,140.43 km) |
| Chambersburg to Oss | 3,862.48 mi (6,216.06 km) |
| Chambersburg to Oud-Beijerland | 3,817.14 mi (6,143.10 km) |
| Chambersburg to Oudenbosch | 3,828.07 mi (6,160.68 km) |
