| Duluth to Cuenca | 4,285.31 mi (6,896.54 km) |
| Duluth to Cuevas del Almanzora | 4,419.30 mi (7,112.17 km) |
| Duluth to Cullera | 4,402.89 mi (7,085.76 km) |
| Duluth to Culleredo | 3,894.42 mi (6,267.47 km) |
| Duluth to Cunit | 4,388.16 mi (7,062.06 km) |
| Duluth to Daganzo de Arriba | 4,210.99 mi (6,776.94 km) |
| Duluth to Daimiel | 4,267.50 mi (6,867.87 km) |
| Duluth to Don Benito | 4,178.90 mi (6,725.29 km) |
| Duluth to Donostia | 4,152.27 mi (6,682.43 km) |
| Duluth to Dos Hermanas | 4,248.36 mi (6,837.07 km) |
| Duluth to Durango | 4,132.77 mi (6,651.05 km) |
| Duluth to Ecija | 4,273.25 mi (6,877.13 km) |
| Duluth to Ejea de los Caballeros | 4,236.80 mi (6,818.47 km) |
| Duluth to El Alamo | 4,202.26 mi (6,762.89 km) |
| Duluth to El Arahal | 4,264.99 mi (6,863.84 km) |
