| Southgate to Orbetello | 827.80 mi (1,332.22 km) |
| Southgate to Oria | 1,141.81 mi (1,837.56 km) |
| Southgate to Oristano | 911.15 mi (1,466.35 km) |
| Southgate to Orta Nova | 1,032.38 mi (1,661.45 km) |
| Southgate to Orte | 862.87 mi (1,388.65 km) |
| Southgate to Ortona | 934.92 mi (1,504.60 km) |
| Southgate to Orvieto | 840.18 mi (1,352.14 km) |
| Southgate to Orzinuovi | 629.33 mi (1,012.81 km) |
| Southgate to Osimo | 845.88 mi (1,361.32 km) |
| Southgate to Ospitaletto | 626.26 mi (1,007.87 km) |
| Southgate to Ostuni | 1,128.07 mi (1,815.45 km) |
| Southgate to Ottaviano | 1,017.07 mi (1,636.82 km) |
| Southgate to Ovada | 629.22 mi (1,012.63 km) |
| Southgate to Ozieri | 878.12 mi (1,413.19 km) |
| Southgate to Paceco | 1,125.77 mi (1,811.76 km) |
