| Mason City to Creutzwald | 4,433.16 mi (7,134.48 km) |
| Mason City to Croissy-sur-Seine | 4,279.12 mi (6,886.57 km) |
| Mason City to Croix | 4,245.80 mi (6,832.95 km) |
| Mason City to Crosne | 4,297.46 mi (6,916.10 km) |
| Mason City to Cuers | 4,663.04 mi (7,504.45 km) |
| Mason City to Cugnaux | 4,462.29 mi (7,181.36 km) |
| Mason City to Cusset | 4,439.16 mi (7,144.14 km) |
| Mason City to Dammarie-le-Lys | 4,311.97 mi (6,939.44 km) |
| Mason City to Dammartin-en-Goele | 4,292.28 mi (6,907.77 km) |
| Mason City to Dardilly | 4,502.62 mi (7,246.27 km) |
| Mason City to Darnetal | 4,220.07 mi (6,791.54 km) |
| Mason City to Dax | 4,358.19 mi (7,013.83 km) |
| Mason City to Decines-Charpieu | 4,512.04 mi (7,261.43 km) |
| Mason City to Denain | 4,268.32 mi (6,869.20 km) |
| Mason City to Deuil-la-Barre | 4,282.14 mi (6,891.45 km) |
