| Harker Heights to Cividale del Friuli | 5,589.87 mi (8,996.03 km) |
| Harker Heights to Civita Castellana | 5,702.74 mi (9,177.67 km) |
| Harker Heights to Civitanova Marche | 5,716.06 mi (9,199.12 km) |
| Harker Heights to Civitavecchia | 5,685.22 mi (9,149.48 km) |
| Harker Heights to Civitella in Val di Chiana | 5,629.21 mi (9,059.34 km) |
| Harker Heights to Clusone | 5,461.18 mi (8,788.92 km) |
| Harker Heights to Coccaglio | 5,474.60 mi (8,810.52 km) |
| Harker Heights to Codigoro | 5,588.96 mi (8,994.56 km) |
| Harker Heights to Codogno | 5,479.04 mi (8,817.67 km) |
| Harker Heights to Codroipo | 5,577.77 mi (8,976.55 km) |
| Harker Heights to Cogoleto | 5,465.00 mi (8,795.07 km) |
| Harker Heights to Colle di Val d'Elsa | 5,605.89 mi (9,021.81 km) |
| Harker Heights to Colle Salvetti | 5,571.23 mi (8,966.03 km) |
| Harker Heights to Collecchio | 5,515.61 mi (8,876.51 km) |
| Harker Heights to Colleferro | 5,750.78 mi (9,254.99 km) |
