| Richardson to Cividale del Friuli | 5,454.29 mi (8,777.84 km) |
| Richardson to Civita Castellana | 5,570.27 mi (8,964.48 km) |
| Richardson to Civitanova Marche | 5,582.30 mi (8,983.85 km) |
| Richardson to Civitavecchia | 5,553.16 mi (8,936.95 km) |
| Richardson to Civitella in Val di Chiana | 5,496.16 mi (8,845.21 km) |
| Richardson to Clusone | 5,326.94 mi (8,572.88 km) |
| Richardson to Coccaglio | 5,340.59 mi (8,594.84 km) |
| Richardson to Codigoro | 5,454.71 mi (8,778.50 km) |
| Richardson to Codogno | 5,345.43 mi (8,602.64 km) |
| Richardson to Codroipo | 5,442.43 mi (8,758.75 km) |
| Richardson to Cogoleto | 5,332.38 mi (8,581.64 km) |
| Richardson to Colle di Val d'Elsa | 5,473.08 mi (8,808.07 km) |
| Richardson to Colle Salvetti | 5,438.52 mi (8,752.46 km) |
| Richardson to Collecchio | 5,382.11 mi (8,661.68 km) |
| Richardson to Colleferro | 5,618.49 mi (9,042.08 km) |
