| Stanford le Hope to Orbetello | 805.58 mi (1,296.45 km) |
| Stanford le Hope to Oria | 1,117.86 mi (1,799.03 km) |
| Stanford le Hope to Oristano | 892.30 mi (1,436.03 km) |
| Stanford le Hope to Orta Nova | 1,008.70 mi (1,623.35 km) |
| Stanford le Hope to Orte | 840.01 mi (1,351.86 km) |
| Stanford le Hope to Ortona | 911.28 mi (1,466.57 km) |
| Stanford le Hope to Orvieto | 817.32 mi (1,315.35 km) |
| Stanford le Hope to Orzinuovi | 605.96 mi (975.19 km) |
| Stanford le Hope to Osimo | 822.08 mi (1,323.01 km) |
| Stanford le Hope to Ospitaletto | 602.72 mi (969.98 km) |
| Stanford le Hope to Ostuni | 1,104.07 mi (1,776.82 km) |
| Stanford le Hope to Ottaviano | 994.03 mi (1,599.74 km) |
| Stanford le Hope to Ovada | 607.24 mi (977.26 km) |
| Stanford le Hope to Ozieri | 858.56 mi (1,381.71 km) |
| Stanford le Hope to Paceco | 1,104.93 mi (1,778.21 km) |
