| Ottumwa to Orthez | 4,432.68 mi (7,133.71 km) |
| Ottumwa to Orvault | 4,258.94 mi (6,854.10 km) |
| Ottumwa to Osny | 4,338.85 mi (6,982.70 km) |
| Ottumwa to Ostwald | 4,571.67 mi (7,357.39 km) |
| Ottumwa to Ouistreham | 4,241.54 mi (6,826.10 km) |
| Ottumwa to Oullins | 4,573.87 mi (7,360.94 km) |
| Ottumwa to Outreau | 4,261.31 mi (6,857.92 km) |
| Ottumwa to Oyonnax | 4,585.52 mi (7,379.69 km) |
| Ottumwa to Ozoir-la-Ferriere | 4,372.93 mi (7,037.56 km) |
| Ottumwa to Pace | 4,221.95 mi (6,794.58 km) |
| Ottumwa to Palaiseau | 4,358.63 mi (7,014.54 km) |
| Ottumwa to Pamiers | 4,546.52 mi (7,316.92 km) |
| Ottumwa to Panazol | 4,429.56 mi (7,128.68 km) |
| Ottumwa to Pantin | 4,357.86 mi (7,013.29 km) |
| Ottumwa to Paray-le-Monial | 4,517.74 mi (7,270.61 km) |
