| Norristown to Cortona | 4,291.67 mi (6,906.77 km) |
| Norristown to Cosenza | 4,624.87 mi (7,443.01 km) |
| Norristown to Cossato | 4,050.30 mi (6,518.32 km) |
| Norristown to Costa Volpino | 4,124.52 mi (6,637.78 km) |
| Norristown to Creazzo | 4,193.05 mi (6,748.07 km) |
| Norristown to Crema | 4,121.83 mi (6,633.44 km) |
| Norristown to Cremona | 4,144.45 mi (6,669.85 km) |
| Norristown to Crevalcore | 4,206.19 mi (6,769.21 km) |
| Norristown to Crispiano | 4,618.16 mi (7,432.20 km) |
| Norristown to Crosia | 4,637.49 mi (7,463.31 km) |
| Norristown to Crotone | 4,671.71 mi (7,518.39 km) |
| Norristown to Cuneo | 4,061.01 mi (6,535.56 km) |
| Norristown to Cuorgne | 4,033.55 mi (6,491.38 km) |
| Norristown to Cusano Milanino | 4,094.49 mi (6,589.44 km) |
| Norristown to Cutro | 4,667.72 mi (7,511.97 km) |
