| Marshalltown to Opole | 4,801.11 mi (7,726.64 km) |
| Marshalltown to Orzesze | 4,851.74 mi (7,808.12 km) |
| Marshalltown to Osowa | 4,644.78 mi (7,475.05 km) |
| Marshalltown to Ostroda | 4,723.47 mi (7,601.70 km) |
| Marshalltown to Ostroleka | 4,801.49 mi (7,727.25 km) |
| Marshalltown to Ostrow Mazowiecka | 4,824.27 mi (7,763.92 km) |
| Marshalltown to Ostrow Wielkopolski | 4,751.91 mi (7,647.47 km) |
| Marshalltown to Ostrowiec Swietokrzyski | 4,898.84 mi (7,883.92 km) |
| Marshalltown to Ostrzeszow | 4,766.39 mi (7,670.76 km) |
| Marshalltown to Oswiecim | 4,872.30 mi (7,841.21 km) |
| Marshalltown to Otwock | 4,837.87 mi (7,785.79 km) |
| Marshalltown to Ozarow Mazowiecki | 4,818.79 mi (7,755.10 km) |
| Marshalltown to Ozimek | 4,809.88 mi (7,740.75 km) |
| Marshalltown to Ozorkow | 4,783.58 mi (7,698.42 km) |
| Marshalltown to Pabianice | 4,801.56 mi (7,727.37 km) |
