| Tonawanda to Cividale del Friuli | 4,276.74 mi (6,882.76 km) |
| Tonawanda to Civita Castellana | 4,384.46 mi (7,056.11 km) |
| Tonawanda to Civitanova Marche | 4,399.13 mi (7,079.71 km) |
| Tonawanda to Civitavecchia | 4,366.70 mi (7,027.53 km) |
| Tonawanda to Civitella in Val di Chiana | 4,311.44 mi (6,938.59 km) |
| Tonawanda to Clusone | 4,145.10 mi (6,670.90 km) |
| Tonawanda to Coccaglio | 4,158.13 mi (6,691.87 km) |
| Tonawanda to Codigoro | 4,272.84 mi (6,876.48 km) |
| Tonawanda to Codogno | 4,161.97 mi (6,698.05 km) |
| Tonawanda to Codroipo | 4,264.00 mi (6,862.24 km) |
| Tonawanda to Cogoleto | 4,146.86 mi (6,673.73 km) |
| Tonawanda to Colle di Val d'Elsa | 4,287.89 mi (6,900.69 km) |
| Tonawanda to Colle Salvetti | 4,253.14 mi (6,844.77 km) |
| Tonawanda to Collecchio | 4,198.36 mi (6,756.61 km) |
| Tonawanda to Colleferro | 4,432.38 mi (7,133.23 km) |
