| Chico to Orbetello | 6,042.40 mi (9,724.31 km) |
| Chico to Oria | 6,332.51 mi (10,191.19 km) |
| Chico to Oristano | 6,107.46 mi (9,829.00 km) |
| Chico to Orta Nova | 6,231.99 mi (10,029.42 km) |
| Chico to Orte | 6,074.53 mi (9,776.01 km) |
| Chico to Ortona | 6,136.60 mi (9,875.91 km) |
| Chico to Orvieto | 6,051.92 mi (9,739.63 km) |
| Chico to Orzinuovi | 5,837.99 mi (9,395.34 km) |
| Chico to Osimo | 6,045.64 mi (9,729.52 km) |
| Chico to Ospitaletto | 5,833.12 mi (9,387.50 km) |
| Chico to Ostuni | 6,317.24 mi (10,166.62 km) |
| Chico to Ottaviano | 6,226.52 mi (10,020.61 km) |
| Chico to Ovada | 5,844.17 mi (9,405.28 km) |
| Chico to Ozieri | 6,082.04 mi (9,788.10 km) |
| Chico to Paceco | 6,337.54 mi (10,199.29 km) |
