| Duarte to Orbetello | 6,245.04 mi (10,050.42 km) |
| Duarte to Oria | 6,554.30 mi (10,548.12 km) |
| Duarte to Oristano | 6,288.49 mi (10,120.35 km) |
| Duarte to Orta Nova | 6,448.72 mi (10,378.22 km) |
| Duarte to Orte | 6,281.99 mi (10,109.89 km) |
| Duarte to Ortona | 6,351.81 mi (10,222.24 km) |
| Duarte to Orvieto | 6,259.31 mi (10,073.38 km) |
| Duarte to Orzinuovi | 6,047.94 mi (9,733.22 km) |
| Duarte to Osimo | 6,261.55 mi (10,077.00 km) |
| Duarte to Ospitaletto | 6,044.25 mi (9,727.27 km) |
| Duarte to Ostuni | 6,539.66 mi (10,524.56 km) |
| Duarte to Ottaviano | 6,436.24 mi (10,358.13 km) |
| Duarte to Ovada | 6,046.02 mi (9,730.13 km) |
| Duarte to Ozieri | 6,267.77 mi (10,087.00 km) |
| Duarte to Paceco | 6,527.47 mi (10,504.95 km) |
