| Duluth to Cromer | 3,881.41 mi (6,246.52 km) |
| Duluth to Crosby | 3,710.28 mi (5,971.11 km) |
| Duluth to Crowborough | 3,915.33 mi (6,301.12 km) |
| Duluth to Croxley Green | 3,870.79 mi (6,229.43 km) |
| Duluth to Croydon | 3,893.40 mi (6,265.82 km) |
| Duluth to Cudworth | 3,763.15 mi (6,056.20 km) |
| Duluth to Culcheth | 3,729.45 mi (6,001.98 km) |
| Duluth to Cullercoats | 3,708.90 mi (5,968.90 km) |
| Duluth to Cumbernauld | 3,590.54 mi (5,778.42 km) |
| Duluth to Cumnock | 3,598.28 mi (5,790.88 km) |
| Duluth to Cupar | 3,610.52 mi (5,810.57 km) |
| Duluth to Cwmbran | 3,778.63 mi (6,081.12 km) |
| Duluth to Dagenham | 3,895.75 mi (6,269.60 km) |
| Duluth to Dalkeith | 3,623.62 mi (5,831.66 km) |
| Duluth to Darfield | 3,765.82 mi (6,060.50 km) |
