| Ontario to Cuenca | 5,870.66 mi (9,447.91 km) |
| Ontario to Cuevas del Almanzora | 6,008.72 mi (9,670.10 km) |
| Ontario to Cullera | 5,987.51 mi (9,635.97 km) |
| Ontario to Culleredo | 5,480.68 mi (8,820.30 km) |
| Ontario to Cunit | 5,964.41 mi (9,598.78 km) |
| Ontario to Daganzo de Arriba | 5,797.04 mi (9,329.44 km) |
| Ontario to Daimiel | 5,856.13 mi (9,424.53 km) |
| Ontario to Don Benito | 5,769.33 mi (9,284.85 km) |
| Ontario to Donostia | 5,729.06 mi (9,220.04 km) |
| Ontario to Dos Hermanas | 5,839.88 mi (9,398.37 km) |
| Ontario to Durango | 5,711.20 mi (9,191.29 km) |
| Ontario to Ecija | 5,864.39 mi (9,437.82 km) |
| Ontario to Ejea de los Caballeros | 5,815.60 mi (9,359.31 km) |
| Ontario to El Alamo | 5,789.48 mi (9,317.27 km) |
| Ontario to El Arahal | 5,856.42 mi (9,425.00 km) |
