| Willoughby to Opole | 4,427.53 mi (7,125.42 km) |
| Willoughby to Orzesze | 4,477.50 mi (7,205.85 km) |
| Willoughby to Osowa | 4,299.67 mi (6,919.65 km) |
| Willoughby to Ostroda | 4,378.09 mi (7,045.86 km) |
| Willoughby to Ostroleka | 4,457.18 mi (7,173.13 km) |
| Willoughby to Ostrow Mazowiecka | 4,479.28 mi (7,208.71 km) |
| Willoughby to Ostrow Wielkopolski | 4,384.71 mi (7,056.51 km) |
| Willoughby to Ostrowiec Swietokrzyski | 4,539.31 mi (7,305.32 km) |
| Willoughby to Ostrzeszow | 4,397.97 mi (7,077.84 km) |
| Willoughby to Oswiecim | 4,498.98 mi (7,240.40 km) |
| Willoughby to Otwock | 4,485.90 mi (7,219.36 km) |
| Willoughby to Ozarow Mazowiecki | 4,465.86 mi (7,187.11 km) |
| Willoughby to Ozimek | 4,437.31 mi (7,141.16 km) |
| Willoughby to Ozorkow | 4,423.61 mi (7,119.11 km) |
| Willoughby to Pabianice | 4,439.75 mi (7,145.09 km) |
