| Harstad to Orzesze | 1,290.79 mi (2,077.33 km) |
| Harstad to Osowa | 995.03 mi (1,601.35 km) |
| Harstad to Ostroda | 1,049.17 mi (1,688.48 km) |
| Harstad to Ostroleka | 1,099.26 mi (1,769.08 km) |
| Harstad to Ostrow Mazowiecka | 1,119.19 mi (1,801.17 km) |
| Harstad to Ostrow Wielkopolski | 1,185.81 mi (1,908.38 km) |
| Harstad to Ostrowiec Swietokrzyski | 1,245.06 mi (2,003.72 km) |
| Harstad to Ostrzeszow | 1,202.02 mi (1,934.47 km) |
| Harstad to Oswiecim | 1,299.51 mi (2,091.37 km) |
| Harstad to Otwock | 1,163.13 mi (1,871.88 km) |
| Harstad to Ozarow Mazowiecki | 1,154.31 mi (1,857.69 km) |
| Harstad to Ozimek | 1,253.76 mi (2,017.73 km) |
| Harstad to Ozorkow | 1,166.62 mi (1,877.49 km) |
| Harstad to Pabianice | 1,188.72 mi (1,913.06 km) |
| Harstad to Parczew | 1,204.35 mi (1,938.22 km) |
