| Colleyville to Orbetello | 5,537.11 mi (8,911.12 km) |
| Colleyville to Oria | 5,881.35 mi (9,465.11 km) |
| Colleyville to Oristano | 5,527.49 mi (8,895.64 km) |
| Colleyville to Orta Nova | 5,767.40 mi (9,281.73 km) |
| Colleyville to Orte | 5,584.44 mi (8,987.29 km) |
| Colleyville to Ortona | 5,670.76 mi (9,126.20 km) |
| Colleyville to Orvieto | 5,562.55 mi (8,952.05 km) |
| Colleyville to Orzinuovi | 5,366.75 mi (8,636.94 km) |
| Colleyville to Osimo | 5,586.23 mi (8,990.17 km) |
| Colleyville to Ospitaletto | 5,366.19 mi (8,636.06 km) |
| Colleyville to Ostuni | 5,868.97 mi (9,445.19 km) |
| Colleyville to Ottaviano | 5,737.79 mi (9,234.08 km) |
| Colleyville to Ovada | 5,344.62 mi (8,601.33 km) |
| Colleyville to Ozieri | 5,518.44 mi (8,881.07 km) |
| Colleyville to Paceco | 5,777.60 mi (9,298.14 km) |
