| Howard to Opole | 4,510.55 mi (7,259.03 km) |
| Howard to Orzesze | 4,561.13 mi (7,340.43 km) |
| Howard to Osowa | 4,358.74 mi (7,014.71 km) |
| Howard to Ostroda | 4,437.49 mi (7,141.45 km) |
| Howard to Ostroleka | 4,515.80 mi (7,267.48 km) |
| Howard to Ostrow Mazowiecka | 4,538.49 mi (7,303.99 km) |
| Howard to Ostrow Wielkopolski | 4,462.28 mi (7,181.35 km) |
| Howard to Ostrowiec Swietokrzyski | 4,610.62 mi (7,420.07 km) |
| Howard to Ostrzeszow | 4,476.58 mi (7,204.37 km) |
| Howard to Oswiecim | 4,581.85 mi (7,373.78 km) |
| Howard to Otwock | 4,550.86 mi (7,323.90 km) |
| Howard to Ozarow Mazowiecki | 4,531.60 mi (7,292.90 km) |
| Howard to Ozimek | 4,519.48 mi (7,273.40 km) |
| Howard to Ozorkow | 4,495.15 mi (7,234.25 km) |
| Howard to Pabianice | 4,512.85 mi (7,262.73 km) |
