| Carroll to Orbetello | 5,010.38 mi (8,063.43 km) |
| Carroll to Oria | 5,343.70 mi (8,599.85 km) |
| Carroll to Oristano | 5,023.24 mi (8,084.12 km) |
| Carroll to Orta Nova | 5,232.03 mi (8,420.14 km) |
| Carroll to Orte | 5,053.95 mi (8,133.55 km) |
| Carroll to Ortona | 5,134.58 mi (8,263.30 km) |
| Carroll to Orvieto | 5,031.59 mi (8,097.57 km) |
| Carroll to Orzinuovi | 4,828.37 mi (7,770.51 km) |
| Carroll to Osimo | 5,047.28 mi (8,122.82 km) |
| Carroll to Ospitaletto | 4,826.63 mi (7,767.71 km) |
| Carroll to Ostuni | 5,330.39 mi (8,578.44 km) |
| Carroll to Ottaviano | 5,208.77 mi (8,382.71 km) |
| Carroll to Ovada | 4,813.88 mi (7,747.20 km) |
| Carroll to Ozieri | 5,008.93 mi (8,061.10 km) |
| Carroll to Paceco | 5,270.13 mi (8,481.46 km) |
