| Colorado Springs to Orbetello | 5,534.84 mi (8,907.47 km) |
| Colorado Springs to Oria | 5,860.20 mi (9,431.08 km) |
| Colorado Springs to Oristano | 5,558.88 mi (8,946.15 km) |
| Colorado Springs to Orta Nova | 5,750.46 mi (9,254.47 km) |
| Colorado Springs to Orte | 5,576.08 mi (8,973.84 km) |
| Colorado Springs to Ortona | 5,652.92 mi (9,097.50 km) |
| Colorado Springs to Orvieto | 5,553.54 mi (8,937.56 km) |
| Colorado Springs to Orzinuovi | 5,346.71 mi (8,604.69 km) |
| Colorado Springs to Osimo | 5,564.27 mi (8,954.83 km) |
| Colorado Springs to Ospitaletto | 5,344.23 mi (8,600.70 km) |
| Colorado Springs to Ostuni | 5,846.37 mi (9,408.82 km) |
| Colorado Springs to Ottaviano | 5,731.10 mi (9,223.32 km) |
| Colorado Springs to Ovada | 5,336.90 mi (8,588.90 km) |
| Colorado Springs to Ozieri | 5,542.23 mi (8,919.36 km) |
| Colorado Springs to Paceco | 5,803.44 mi (9,339.73 km) |
