| Norristown to Cividale del Friuli | 4,255.84 mi (6,849.11 km) |
| Norristown to Civita Castellana | 4,344.48 mi (6,991.76 km) |
| Norristown to Civitanova Marche | 4,366.33 mi (7,026.93 km) |
| Norristown to Civitavecchia | 4,324.57 mi (6,959.72 km) |
| Norristown to Civitella in Val di Chiana | 4,274.98 mi (6,879.91 km) |
| Norristown to Clusone | 4,116.47 mi (6,624.83 km) |
| Norristown to Coccaglio | 4,128.06 mi (6,643.47 km) |
| Norristown to Codigoro | 4,243.58 mi (6,829.39 km) |
| Norristown to Codogno | 4,129.49 mi (6,645.76 km) |
| Norristown to Codroipo | 4,241.57 mi (6,826.15 km) |
| Norristown to Cogoleto | 4,108.72 mi (6,612.34 km) |
| Norristown to Colle di Val d'Elsa | 4,250.16 mi (6,839.97 km) |
| Norristown to Colle Salvetti | 4,215.00 mi (6,783.39 km) |
| Norristown to Collecchio | 4,164.96 mi (6,702.86 km) |
| Norristown to Colleferro | 4,391.24 mi (7,067.01 km) |
