| Desborough to Opole | 812.44 mi (1,307.49 km) |
| Desborough to Orzesze | 857.29 mi (1,379.68 km) |
| Desborough to Osowa | 803.09 mi (1,292.45 km) |
| Desborough to Ostroda | 864.08 mi (1,390.60 km) |
| Desborough to Ostroleka | 933.25 mi (1,501.92 km) |
| Desborough to Ostrow Mazowiecka | 949.27 mi (1,527.70 km) |
| Desborough to Ostrow Wielkopolski | 791.52 mi (1,273.83 km) |
| Desborough to Ostrowiec Swietokrzyski | 953.53 mi (1,534.56 km) |
| Desborough to Ostrzeszow | 799.74 mi (1,287.06 km) |
| Desborough to Oswiecim | 879.56 mi (1,415.51 km) |
| Desborough to Otwock | 930.19 mi (1,496.99 km) |
| Desborough to Ozarow Mazowiecki | 909.52 mi (1,463.73 km) |
| Desborough to Ozimek | 824.10 mi (1,326.26 km) |
| Desborough to Ozorkow | 849.03 mi (1,366.38 km) |
| Desborough to Pabianice | 857.35 mi (1,379.77 km) |
