| Dayton to Noventa Vicentina | 4,586.48 mi (7,381.23 km) |
| Dayton to Novi di Modena | 4,575.51 mi (7,363.58 km) |
| Dayton to Novi Ligure | 4,493.28 mi (7,231.24 km) |
| Dayton to Nuoro | 4,684.38 mi (7,538.79 km) |
| Dayton to Occhiobello | 4,602.23 mi (7,406.57 km) |
| Dayton to Oderzo | 4,606.14 mi (7,412.87 km) |
| Dayton to Oggiono | 4,478.92 mi (7,208.13 km) |
| Dayton to Olbia | 4,668.45 mi (7,513.15 km) |
| Dayton to Oleggio | 4,456.25 mi (7,171.64 km) |
| Dayton to Olgiate Comasco | 4,463.25 mi (7,182.91 km) |
| Dayton to Olgiate Olona | 4,465.30 mi (7,186.21 km) |
| Dayton to Omegna | 4,436.88 mi (7,140.46 km) |
| Dayton to Opera | 4,488.15 mi (7,222.97 km) |
| Dayton to Oppeano | 4,571.63 mi (7,357.33 km) |
| Dayton to Orbassano | 4,432.29 mi (7,133.08 km) |
