| Kalispell to Orbetello | 5,351.09 mi (8,611.75 km) |
| Kalispell to Oria | 5,640.41 mi (9,077.36 km) |
| Kalispell to Oristano | 5,418.95 mi (8,720.96 km) |
| Kalispell to Orta Nova | 5,539.91 mi (8,915.62 km) |
| Kalispell to Orte | 5,382.85 mi (8,662.86 km) |
| Kalispell to Ortona | 5,444.56 mi (8,762.18 km) |
| Kalispell to Orvieto | 5,360.25 mi (8,626.49 km) |
| Kalispell to Orzinuovi | 5,146.23 mi (8,282.06 km) |
| Kalispell to Osimo | 5,353.59 mi (8,615.78 km) |
| Kalispell to Ospitaletto | 5,141.30 mi (8,274.12 km) |
| Kalispell to Ostuni | 5,625.15 mi (9,052.80 km) |
| Kalispell to Ottaviano | 5,534.66 mi (8,907.18 km) |
| Kalispell to Ovada | 5,153.03 mi (8,293.00 km) |
| Kalispell to Ozieri | 5,392.77 mi (8,678.83 km) |
| Kalispell to Paceco | 5,647.45 mi (9,088.68 km) |
