| Sacramento to Orbetello | 6,101.46 mi (9,819.35 km) |
| Sacramento to Oria | 6,394.64 mi (10,291.19 km) |
| Sacramento to Oristano | 6,163.19 mi (9,918.70 km) |
| Sacramento to Orta Nova | 6,293.31 mi (10,128.10 km) |
| Sacramento to Orte | 6,134.35 mi (9,872.27 km) |
| Sacramento to Ortona | 6,197.63 mi (9,974.13 km) |
| Sacramento to Orvieto | 6,111.71 mi (9,835.85 km) |
| Sacramento to Orzinuovi | 5,898.04 mi (9,491.98 km) |
| Sacramento to Osimo | 6,106.72 mi (9,827.82 km) |
| Sacramento to Ospitaletto | 5,893.35 mi (9,484.42 km) |
| Sacramento to Ostuni | 6,379.46 mi (10,266.75 km) |
| Sacramento to Ottaviano | 6,286.77 mi (10,117.58 km) |
| Sacramento to Ovada | 5,902.98 mi (9,499.92 km) |
| Sacramento to Ozieri | 6,138.50 mi (9,878.96 km) |
| Sacramento to Paceco | 6,394.83 mi (10,291.48 km) |
