| Powder Springs to Orbetello | 4,957.77 mi (7,978.76 km) |
| Powder Springs to Oria | 5,310.99 mi (8,547.22 km) |
| Powder Springs to Oristano | 4,924.33 mi (7,924.94 km) |
| Powder Springs to Orta Nova | 5,195.57 mi (8,361.47 km) |
| Powder Springs to Orte | 5,008.92 mi (8,061.07 km) |
| Powder Springs to Ortona | 5,101.07 mi (8,209.38 km) |
| Powder Springs to Orvieto | 4,987.84 mi (8,027.15 km) |
| Powder Springs to Orzinuovi | 4,803.52 mi (7,730.52 km) |
| Powder Springs to Osimo | 5,021.00 mi (8,080.51 km) |
| Powder Springs to Ospitaletto | 4,804.48 mi (7,732.07 km) |
| Powder Springs to Ostuni | 5,299.90 mi (8,529.36 km) |
| Powder Springs to Ottaviano | 5,158.76 mi (8,302.23 km) |
| Powder Springs to Ovada | 4,772.29 mi (7,680.26 km) |
| Powder Springs to Ozieri | 4,920.64 mi (7,919.01 km) |
| Powder Springs to Paceco | 5,174.95 mi (8,328.28 km) |
