| Claremont to Orbetello | 6,239.32 mi (10,041.21 km) |
| Claremont to Oria | 6,549.15 mi (10,539.84 km) |
| Claremont to Oristano | 6,282.10 mi (10,110.06 km) |
| Claremont to Orta Nova | 6,443.43 mi (10,369.70 km) |
| Claremont to Orte | 6,276.42 mi (10,100.92 km) |
| Claremont to Ortona | 6,346.48 mi (10,213.66 km) |
| Claremont to Orvieto | 6,253.74 mi (10,064.42 km) |
| Claremont to Orzinuovi | 6,042.49 mi (9,724.45 km) |
| Claremont to Osimo | 6,256.26 mi (10,068.48 km) |
| Claremont to Ospitaletto | 6,038.83 mi (9,718.56 km) |
| Claremont to Ostuni | 6,534.53 mi (10,516.32 km) |
| Claremont to Ottaviano | 6,430.72 mi (10,349.24 km) |
| Claremont to Ovada | 6,040.31 mi (9,720.94 km) |
| Claremont to Ozieri | 6,261.52 mi (10,076.94 km) |
| Claremont to Paceco | 6,521.31 mi (10,495.04 km) |
