| Atascadero to Orbetello | 6,256.46 mi (10,068.80 km) |
| Atascadero to Oria | 6,557.18 mi (10,552.75 km) |
| Atascadero to Oristano | 6,309.72 mi (10,154.52 km) |
| Atascadero to Orta Nova | 6,453.86 mi (10,386.48 km) |
| Atascadero to Orte | 6,291.24 mi (10,124.77 km) |
| Atascadero to Ortona | 6,357.54 mi (10,231.48 km) |
| Atascadero to Orvieto | 6,268.57 mi (10,088.28 km) |
| Atascadero to Orzinuovi | 6,055.76 mi (9,745.80 km) |
| Atascadero to Osimo | 6,266.85 mi (10,085.52 km) |
| Atascadero to Ospitaletto | 6,051.52 mi (9,738.97 km) |
| Atascadero to Ostuni | 6,542.22 mi (10,528.69 km) |
| Atascadero to Ottaviano | 6,444.63 mi (10,371.63 km) |
| Atascadero to Ovada | 6,057.56 mi (9,748.70 km) |
| Atascadero to Ozieri | 6,286.88 mi (10,117.75 km) |
| Atascadero to Paceco | 6,545.02 mi (10,533.20 km) |
