| Palmer Ranch to Orbetello | 5,149.91 mi (8,287.99 km) |
| Palmer Ranch to Oria | 5,507.67 mi (8,863.73 km) |
| Palmer Ranch to Oristano | 5,091.13 mi (8,193.38 km) |
| Palmer Ranch to Orta Nova | 5,392.25 mi (8,677.99 km) |
| Palmer Ranch to Orte | 5,204.29 mi (8,375.49 km) |
| Palmer Ranch to Ortona | 5,301.07 mi (8,531.25 km) |
| Palmer Ranch to Orvieto | 5,184.30 mi (8,343.33 km) |
| Palmer Ranch to Orzinuovi | 5,013.72 mi (8,068.81 km) |
| Palmer Ranch to Osimo | 5,226.40 mi (8,411.07 km) |
| Palmer Ranch to Ospitaletto | 5,016.12 mi (8,072.67 km) |
| Palmer Ranch to Ostuni | 5,497.98 mi (8,848.15 km) |
| Palmer Ranch to Ottaviano | 5,348.63 mi (8,607.79 km) |
| Palmer Ranch to Ovada | 4,973.99 mi (8,004.87 km) |
| Palmer Ranch to Ozieri | 5,093.54 mi (8,197.26 km) |
| Palmer Ranch to Paceco | 5,339.10 mi (8,592.45 km) |
