| Karlstad to Opole | 626.61 mi (1,008.43 km) |
| Karlstad to Orzesze | 670.52 mi (1,079.10 km) |
| Karlstad to Osowa | 389.80 mi (627.33 km) |
| Karlstad to Ostroda | 462.71 mi (744.66 km) |
| Karlstad to Ostroleka | 534.08 mi (859.51 km) |
| Karlstad to Ostrow Mazowiecka | 557.06 mi (896.50 km) |
| Karlstad to Ostrow Wielkopolski | 559.74 mi (900.81 km) |
| Karlstad to Ostrowiec Swietokrzyski | 660.49 mi (1,062.96 km) |
| Karlstad to Ostrzeszow | 576.57 mi (927.91 km) |
| Karlstad to Oswiecim | 683.90 mi (1,100.63 km) |
| Karlstad to Otwock | 584.68 mi (940.95 km) |
| Karlstad to Ozarow Mazowiecki | 569.46 mi (916.45 km) |
| Karlstad to Ozimek | 629.33 mi (1,012.81 km) |
| Karlstad to Ozorkow | 558.91 mi (899.49 km) |
| Karlstad to Pabianice | 580.86 mi (934.81 km) |
