| Marshalltown to Opwijk | 4,315.53 mi (6,945.17 km) |
| Marshalltown to Ostend | 4,259.87 mi (6,855.60 km) |
| Marshalltown to Oud-Heverlee | 4,338.15 mi (6,981.57 km) |
| Marshalltown to Oud-Turnhout | 4,330.80 mi (6,969.75 km) |
| Marshalltown to Oudenaarde | 4,298.83 mi (6,918.30 km) |
| Marshalltown to Oudenburg | 4,264.39 mi (6,862.88 km) |
| Marshalltown to Oupeye | 4,378.22 mi (7,046.06 km) |
| Marshalltown to Overijse | 4,335.26 mi (6,976.93 km) |
| Marshalltown to Overpelt | 4,350.17 mi (7,000.93 km) |
| Marshalltown to Paal | 4,348.37 mi (6,998.02 km) |
| Marshalltown to Peer | 4,354.77 mi (7,008.32 km) |
| Marshalltown to Pepinster | 4,390.05 mi (7,065.11 km) |
| Marshalltown to Peruwelz | 4,310.95 mi (6,937.80 km) |
| Marshalltown to Perwez | 4,351.64 mi (7,003.28 km) |
| Marshalltown to Philippeville | 4,358.51 mi (7,014.35 km) |
