| Willimantic to Opole | 4,083.54 mi (6,571.82 km) |
| Willimantic to Orzesze | 4,132.51 mi (6,650.64 km) |
| Willimantic to Osowa | 3,978.52 mi (6,402.81 km) |
| Willimantic to Ostroda | 4,055.81 mi (6,527.19 km) |
| Willimantic to Ostroleka | 4,134.77 mi (6,654.28 km) |
| Willimantic to Ostrow Mazowiecka | 4,156.12 mi (6,688.62 km) |
| Willimantic to Ostrow Wielkopolski | 4,045.93 mi (6,511.30 km) |
| Willimantic to Ostrowiec Swietokrzyski | 4,204.61 mi (6,766.67 km) |
| Willimantic to Ostrzeszow | 4,058.13 mi (6,530.93 km) |
| Willimantic to Oswiecim | 4,154.45 mi (6,685.93 km) |
| Willimantic to Otwock | 4,157.42 mi (6,690.73 km) |
| Willimantic to Ozarow Mazowiecki | 4,136.89 mi (6,657.68 km) |
| Willimantic to Ozimek | 4,093.97 mi (6,588.61 km) |
| Willimantic to Ozorkow | 4,089.83 mi (6,581.95 km) |
| Willimantic to Pabianice | 4,104.41 mi (6,605.41 km) |
