| Sycamore to Orbetello | 4,772.17 mi (7,680.07 km) |
| Sycamore to Oria | 5,112.36 mi (8,227.54 km) |
| Sycamore to Oristano | 4,773.03 mi (7,681.45 km) |
| Sycamore to Orta Nova | 4,999.18 mi (8,045.40 km) |
| Sycamore to Orte | 4,817.98 mi (7,753.79 km) |
| Sycamore to Ortona | 4,902.12 mi (7,889.20 km) |
| Sycamore to Orvieto | 4,795.87 mi (7,718.21 km) |
| Sycamore to Orzinuovi | 4,596.96 mi (7,398.09 km) |
| Sycamore to Osimo | 4,816.45 mi (7,751.33 km) |
| Sycamore to Ospitaletto | 4,595.97 mi (7,396.49 km) |
| Sycamore to Ostuni | 5,099.61 mi (8,207.03 km) |
| Sycamore to Ottaviano | 4,972.11 mi (8,001.84 km) |
| Sycamore to Ovada | 4,577.79 mi (7,367.24 km) |
| Sycamore to Ozieri | 4,761.36 mi (7,662.66 km) |
| Sycamore to Paceco | 5,021.86 mi (8,081.90 km) |
