| Karlstad to Nasaud | 946.32 mi (1,522.95 km) |
| Karlstad to Navodari | 1,217.63 mi (1,959.58 km) |
| Karlstad to Negresti-Oas | 890.88 mi (1,433.73 km) |
| Karlstad to Nehoiu | 1,105.05 mi (1,778.40 km) |
| Karlstad to Ocna Mures | 993.20 mi (1,598.39 km) |
| Karlstad to Odobesti | 1,094.77 mi (1,761.86 km) |
| Karlstad to Odorheiu Secuiesc | 1,024.73 mi (1,649.14 km) |
| Karlstad to Oltenita | 1,191.76 mi (1,917.95 km) |
| Karlstad to Onesti | 1,057.97 mi (1,702.63 km) |
| Karlstad to Oradea | 917.09 mi (1,475.91 km) |
| Karlstad to Orastie | 1,016.94 mi (1,636.60 km) |
| Karlstad to Oravita | 1,047.61 mi (1,685.97 km) |
| Karlstad to Orsova | 1,078.39 mi (1,735.50 km) |
| Karlstad to Otelu Rosu | 1,025.46 mi (1,650.32 km) |
| Karlstad to Otopeni | 1,151.38 mi (1,852.97 km) |
