| Irving to Opole | 5,439.62 mi (8,754.22 km) |
| Irving to Orzesze | 5,490.06 mi (8,835.40 km) |
| Irving to Osowa | 5,294.02 mi (8,519.90 km) |
| Irving to Ostroda | 5,372.78 mi (8,646.66 km) |
| Irving to Ostroleka | 5,451.32 mi (8,773.05 km) |
| Irving to Ostrow Mazowiecka | 5,473.91 mi (8,809.41 km) |
| Irving to Ostrow Wielkopolski | 5,393.03 mi (8,679.25 km) |
| Irving to Ostrowiec Swietokrzyski | 5,543.33 mi (8,921.12 km) |
| Irving to Ostrzeszow | 5,407.03 mi (8,701.78 km) |
| Irving to Oswiecim | 5,511.06 mi (8,869.19 km) |
| Irving to Otwock | 5,485.07 mi (8,827.37 km) |
| Irving to Ozarow Mazowiecki | 5,465.61 mi (8,796.05 km) |
| Irving to Ozimek | 5,448.84 mi (8,769.07 km) |
| Irving to Ozorkow | 5,427.67 mi (8,734.98 km) |
| Irving to Pabianice | 5,444.96 mi (8,762.82 km) |
