| Norristown to Cognac | 3,674.32 mi (5,913.25 km) |
| Norristown to Cogolin | 4,052.01 mi (6,521.07 km) |
| Norristown to Colmar | 3,939.13 mi (6,339.42 km) |
| Norristown to Colombes | 3,701.78 mi (5,957.44 km) |
| Norristown to Colomiers | 3,807.25 mi (6,127.18 km) |
| Norristown to Combs-la-Ville | 3,721.34 mi (5,988.92 km) |
| Norristown to Comines | 3,686.70 mi (5,933.17 km) |
| Norristown to Compiegne | 3,713.08 mi (5,975.63 km) |
| Norristown to Concarneau | 3,461.95 mi (5,571.47 km) |
| Norristown to Conde-sur-l'Escaut | 3,718.34 mi (5,984.09 km) |
| Norristown to Conflans-Sainte-Honorine | 3,693.36 mi (5,943.89 km) |
| Norristown to Corbas | 3,905.71 mi (6,285.63 km) |
| Norristown to Corbeil-Essonnes | 3,719.51 mi (5,985.97 km) |
| Norristown to Cormeilles-en-Parisis | 3,698.35 mi (5,951.92 km) |
| Norristown to Cosne sur Loire | 3,770.52 mi (6,068.07 km) |
