| Guadarrama to Opole | 1,260.29 mi (2,028.23 km) |
| Guadarrama to Orzesze | 1,279.16 mi (2,058.60 km) |
| Guadarrama to Osowa | 1,406.32 mi (2,263.25 km) |
| Guadarrama to Ostroda | 1,432.21 mi (2,304.93 km) |
| Guadarrama to Ostroleka | 1,470.88 mi (2,367.15 km) |
| Guadarrama to Ostrow Mazowiecka | 1,475.79 mi (2,375.06 km) |
| Guadarrama to Ostrow Wielkopolski | 1,285.62 mi (2,069.01 km) |
| Guadarrama to Ostrowiec Swietokrzyski | 1,407.20 mi (2,264.67 km) |
| Guadarrama to Ostrzeszow | 1,282.77 mi (2,064.41 km) |
| Guadarrama to Oswiecim | 1,295.76 mi (2,085.33 km) |
| Guadarrama to Otwock | 1,432.35 mi (2,305.14 km) |
| Guadarrama to Ozarow Mazowiecki | 1,417.06 mi (2,280.54 km) |
| Guadarrama to Ozimek | 1,271.62 mi (2,046.47 km) |
| Guadarrama to Ozorkow | 1,351.45 mi (2,174.94 km) |
| Guadarrama to Pabianice | 1,345.87 mi (2,165.97 km) |
