| Wallingford Center to Opole | 4,119.15 mi (6,629.13 km) |
| Wallingford Center to Orzesze | 4,168.16 mi (6,708.00 km) |
| Wallingford Center to Osowa | 4,013.51 mi (6,459.11 km) |
| Wallingford Center to Ostroda | 4,090.84 mi (6,583.57 km) |
| Wallingford Center to Ostroleka | 4,169.82 mi (6,710.68 km) |
| Wallingford Center to Ostrow Mazowiecka | 4,191.19 mi (6,745.06 km) |
| Wallingford Center to Ostrow Wielkopolski | 4,081.41 mi (6,568.40 km) |
| Wallingford Center to Ostrowiec Swietokrzyski | 4,240.01 mi (6,823.63 km) |
| Wallingford Center to Ostrzeszow | 4,093.64 mi (6,588.08 km) |
| Wallingford Center to Oswiecim | 4,190.08 mi (6,743.28 km) |
| Wallingford Center to Otwock | 4,192.65 mi (6,747.41 km) |
| Wallingford Center to Ozarow Mazowiecki | 4,172.12 mi (6,714.38 km) |
| Wallingford Center to Ozimek | 4,129.57 mi (6,645.90 km) |
| Wallingford Center to Ozorkow | 4,125.19 mi (6,638.85 km) |
| Wallingford Center to Pabianice | 4,139.81 mi (6,662.38 km) |
