| Northampton to Opole | 815.50 mi (1,312.43 km) |
| Northampton to Orzesze | 859.94 mi (1,383.94 km) |
| Northampton to Osowa | 810.63 mi (1,304.58 km) |
| Northampton to Ostroda | 870.83 mi (1,401.47 km) |
| Northampton to Ostroleka | 939.42 mi (1,511.86 km) |
| Northampton to Ostrow Mazowiecka | 955.20 mi (1,537.24 km) |
| Northampton to Ostrow Wielkopolski | 795.75 mi (1,280.64 km) |
| Northampton to Ostrowiec Swietokrzyski | 957.53 mi (1,541.00 km) |
| Northampton to Ostrzeszow | 803.71 mi (1,293.44 km) |
| Northampton to Oswiecim | 882.19 mi (1,419.75 km) |
| Northampton to Otwock | 935.37 mi (1,505.33 km) |
| Northampton to Ozarow Mazowiecki | 914.76 mi (1,472.16 km) |
| Northampton to Ozimek | 827.23 mi (1,331.30 km) |
| Northampton to Ozorkow | 853.83 mi (1,374.10 km) |
| Northampton to Pabianice | 861.81 mi (1,386.95 km) |
