| Chambersburg to Olivares | 3,753.44 mi (6,040.58 km) |
| Chambersburg to Olivenza | 3,668.63 mi (5,904.09 km) |
| Chambersburg to Olot | 4,015.12 mi (6,461.70 km) |
| Chambersburg to Onate | 3,764.92 mi (6,059.06 km) |
| Chambersburg to Onda | 3,957.55 mi (6,369.06 km) |
| Chambersburg to Onteniente | 3,977.60 mi (6,401.32 km) |
| Chambersburg to Orihuela | 3,985.11 mi (6,413.42 km) |
| Chambersburg to Osuna | 3,810.67 mi (6,132.68 km) |
| Chambersburg to Ourense | 3,530.04 mi (5,681.05 km) |
| Chambersburg to Oviedo | 3,597.53 mi (5,789.67 km) |
| Chambersburg to Paiporta | 3,967.21 mi (6,384.60 km) |
| Chambersburg to Pajara | 3,644.52 mi (5,865.29 km) |
| Chambersburg to Palafolls | 4,043.35 mi (6,507.14 km) |
| Chambersburg to Palafrugell | 4,054.24 mi (6,524.67 km) |
| Chambersburg to Palamos | 4,054.98 mi (6,525.85 km) |
