| Chiclana de la Frontera to Orbetello | 1,013.28 mi (1,630.72 km) |
| Chiclana de la Frontera to Oria | 1,313.05 mi (2,113.14 km) |
| Chiclana de la Frontera to Oristano | 835.21 mi (1,344.13 km) |
| Chiclana de la Frontera to Orta Nova | 1,220.24 mi (1,963.79 km) |
| Chiclana de la Frontera to Orte | 1,070.74 mi (1,723.20 km) |
| Chiclana de la Frontera to Ortona | 1,167.88 mi (1,879.53 km) |
| Chiclana de la Frontera to Orvieto | 1,062.69 mi (1,710.24 km) |
| Chiclana de la Frontera to Orzinuovi | 1,041.09 mi (1,675.48 km) |
| Chiclana de la Frontera to Osimo | 1,145.07 mi (1,842.81 km) |
| Chiclana de la Frontera to Ospitaletto | 1,052.44 mi (1,693.74 km) |
| Chiclana de la Frontera to Ostuni | 1,311.86 mi (2,111.24 km) |
| Chiclana de la Frontera to Ottaviano | 1,151.63 mi (1,853.37 km) |
| Chiclana de la Frontera to Ovada | 960.13 mi (1,545.18 km) |
| Chiclana de la Frontera to Ozieri | 867.14 mi (1,395.53 km) |
| Chiclana de la Frontera to Paceco | 1,033.07 mi (1,662.57 km) |
