| Tomball to Cividale del Friuli | 5,560.31 mi (8,948.45 km) |
| Tomball to Civita Castellana | 5,664.84 mi (9,116.68 km) |
| Tomball to Civitanova Marche | 5,681.39 mi (9,143.32 km) |
| Tomball to Civitavecchia | 5,646.35 mi (9,086.93 km) |
| Tomball to Civitella in Val di Chiana | 5,592.80 mi (9,000.74 km) |
| Tomball to Clusone | 5,427.99 mi (8,735.50 km) |
| Tomball to Coccaglio | 5,440.79 mi (8,756.11 km) |
| Tomball to Codigoro | 5,555.68 mi (8,941.00 km) |
| Tomball to Codogno | 5,444.18 mi (8,761.57 km) |
| Tomball to Codroipo | 5,547.51 mi (8,927.85 km) |
| Tomball to Cogoleto | 5,427.66 mi (8,734.97 km) |
| Tomball to Colle di Val d'Elsa | 5,568.89 mi (8,962.26 km) |
| Tomball to Colle Salvetti | 5,534.00 mi (8,906.12 km) |
| Tomball to Collecchio | 5,480.40 mi (8,819.85 km) |
| Tomball to Colleferro | 5,712.41 mi (9,193.24 km) |
