| Glenmont to Opole | 4,393.71 mi (7,071.00 km) |
| Glenmont to Orzesze | 4,442.85 mi (7,150.07 km) |
| Glenmont to Osowa | 4,284.92 mi (6,895.91 km) |
| Glenmont to Ostroda | 4,362.48 mi (7,020.73 km) |
| Glenmont to Ostroleka | 4,441.53 mi (7,147.94 km) |
| Glenmont to Ostrow Mazowiecka | 4,463.02 mi (7,182.54 km) |
| Glenmont to Ostrow Wielkopolski | 4,355.34 mi (7,009.25 km) |
| Glenmont to Ostrowiec Swietokrzyski | 4,513.50 mi (7,263.78 km) |
| Glenmont to Ostrzeszow | 4,367.71 mi (7,029.15 km) |
| Glenmont to Oswiecim | 4,464.73 mi (7,185.28 km) |
| Glenmont to Otwock | 4,465.27 mi (7,186.15 km) |
| Glenmont to Ozarow Mazowiecki | 4,444.80 mi (7,153.21 km) |
| Glenmont to Ozimek | 4,404.06 mi (7,087.65 km) |
| Glenmont to Ozorkow | 4,398.50 mi (7,078.71 km) |
| Glenmont to Pabianice | 4,413.34 mi (7,102.58 km) |
