| Marshalltown to Nuth | 4,378.62 mi (7,046.71 km) |
| Marshalltown to Oegstgeest | 4,279.16 mi (6,886.64 km) |
| Marshalltown to Oirschot | 4,334.98 mi (6,976.48 km) |
| Marshalltown to Oisterwijk | 4,328.19 mi (6,965.56 km) |
| Marshalltown to Oldebroek | 4,319.22 mi (6,951.12 km) |
| Marshalltown to Oldenzaal | 4,360.35 mi (7,017.30 km) |
| Marshalltown to Ommen | 4,334.58 mi (6,975.84 km) |
| Marshalltown to Oosterend | 4,303.54 mi (6,925.88 km) |
| Marshalltown to Oosterhout | 4,313.68 mi (6,942.20 km) |
| Marshalltown to Oosterwolde | 4,311.81 mi (6,939.18 km) |
| Marshalltown to Oostzaan | 4,284.31 mi (6,894.93 km) |
| Marshalltown to Opmeer | 4,276.47 mi (6,882.31 km) |
| Marshalltown to Oss | 4,332.30 mi (6,972.17 km) |
| Marshalltown to Oud-Beijerland | 4,290.76 mi (6,905.31 km) |
| Marshalltown to Oudenbosch | 4,303.88 mi (6,926.42 km) |
