| Monserrato to Orzesze | 886.89 mi (1,427.30 km) |
| Monserrato to Osowa | 1,135.11 mi (1,826.78 km) |
| Monserrato to Ostroda | 1,120.35 mi (1,803.03 km) |
| Monserrato to Ostroleka | 1,120.91 mi (1,803.94 km) |
| Monserrato to Ostrow Mazowiecka | 1,114.66 mi (1,793.86 km) |
| Monserrato to Ostrow Wielkopolski | 952.59 mi (1,533.04 km) |
| Monserrato to Ostrowiec Swietokrzyski | 1,001.50 mi (1,611.76 km) |
| Monserrato to Ostrzeszow | 941.12 mi (1,514.58 km) |
| Monserrato to Oswiecim | 893.06 mi (1,437.25 km) |
| Monserrato to Otwock | 1,061.02 mi (1,707.55 km) |
| Monserrato to Ozarow Mazowiecki | 1,054.59 mi (1,697.19 km) |
| Monserrato to Ozimek | 903.58 mi (1,454.17 km) |
| Monserrato to Ozorkow | 1,003.74 mi (1,615.37 km) |
| Monserrato to Pabianice | 987.82 mi (1,589.74 km) |
| Monserrato to Parczew | 1,079.86 mi (1,737.86 km) |
