| Gallup to Opole | 5,657.48 mi (9,104.84 km) |
| Gallup to Orzesze | 5,708.01 mi (9,186.16 km) |
| Gallup to Osowa | 5,477.05 mi (8,814.46 km) |
| Gallup to Ostroda | 5,554.69 mi (8,939.41 km) |
| Gallup to Ostroleka | 5,630.39 mi (9,061.23 km) |
| Gallup to Ostrow Mazowiecka | 5,653.45 mi (9,098.35 km) |
| Gallup to Ostrow Wielkopolski | 5,603.16 mi (9,017.41 km) |
| Gallup to Ostrowiec Swietokrzyski | 5,740.76 mi (9,238.86 km) |
| Gallup to Ostrzeszow | 5,618.54 mi (9,042.17 km) |
| Gallup to Oswiecim | 5,727.46 mi (9,217.45 km) |
| Gallup to Otwock | 5,673.53 mi (9,130.67 km) |
| Gallup to Ozarow Mazowiecki | 5,655.68 mi (9,101.94 km) |
| Gallup to Ozimek | 5,665.21 mi (9,117.28 km) |
| Gallup to Ozorkow | 5,627.65 mi (9,056.82 km) |
| Gallup to Pabianice | 5,647.09 mi (9,088.11 km) |
