| Katrineholm to Orbetello | 1,164.05 mi (1,873.35 km) |
| Katrineholm to Oria | 1,279.75 mi (2,059.57 km) |
| Katrineholm to Oristano | 1,360.75 mi (2,189.91 km) |
| Katrineholm to Orta Nova | 1,221.01 mi (1,965.02 km) |
| Katrineholm to Orte | 1,154.43 mi (1,857.87 km) |
| Katrineholm to Ortona | 1,153.00 mi (1,855.57 km) |
| Katrineholm to Orvieto | 1,138.48 mi (1,832.21 km) |
| Katrineholm to Orzinuovi | 975.38 mi (1,569.73 km) |
| Katrineholm to Osimo | 1,078.30 mi (1,735.35 km) |
| Katrineholm to Ospitaletto | 963.38 mi (1,550.42 km) |
| Katrineholm to Ostuni | 1,263.54 mi (2,033.47 km) |
| Katrineholm to Ottaviano | 1,256.28 mi (2,021.79 km) |
| Katrineholm to Ovada | 1,041.78 mi (1,676.59 km) |
| Katrineholm to Ozieri | 1,310.43 mi (2,108.93 km) |
| Katrineholm to Paceco | 1,461.18 mi (2,351.53 km) |
