| Kelso to Orbetello | 5,700.53 mi (9,174.12 km) |
| Kelso to Oria | 5,975.47 mi (9,616.59 km) |
| Kelso to Oristano | 5,781.03 mi (9,303.67 km) |
| Kelso to Orta Nova | 5,879.00 mi (9,461.33 km) |
| Kelso to Orte | 5,729.00 mi (9,219.93 km) |
| Kelso to Ortona | 5,785.22 mi (9,310.42 km) |
| Kelso to Orvieto | 5,706.57 mi (9,183.84 km) |
| Kelso to Orzinuovi | 5,492.08 mi (8,838.65 km) |
| Kelso to Osimo | 5,694.28 mi (9,164.05 km) |
| Kelso to Ospitaletto | 5,486.40 mi (8,829.50 km) |
| Kelso to Ostuni | 5,959.85 mi (9,591.45 km) |
| Kelso to Ottaviano | 5,878.48 mi (9,460.50 km) |
| Kelso to Ovada | 5,504.09 mi (8,857.97 km) |
| Kelso to Ozieri | 5,752.29 mi (9,257.42 km) |
| Kelso to Paceco | 6,003.04 mi (9,660.96 km) |
