| Round Lake to Celano | 4,842.63 mi (7,793.46 km) |
| Round Lake to Cento | 4,639.24 mi (7,466.13 km) |
| Round Lake to Cepagatti | 4,850.28 mi (7,805.77 km) |
| Round Lake to Ceprano | 4,864.70 mi (7,828.98 km) |
| Round Lake to Cercola | 4,928.24 mi (7,931.23 km) |
| Round Lake to Cerea | 4,616.99 mi (7,430.32 km) |
| Round Lake to Cerese | 4,605.21 mi (7,411.37 km) |
| Round Lake to Cerignola | 4,971.42 mi (8,000.73 km) |
| Round Lake to Cermenate | 4,513.52 mi (7,263.81 km) |
| Round Lake to Cernusco sul Naviglio | 4,530.76 mi (7,291.55 km) |
| Round Lake to Cerreto Guidi | 4,664.47 mi (7,506.74 km) |
| Round Lake to Cerro Maggiore | 4,512.41 mi (7,262.01 km) |
| Round Lake to Certaldo | 4,679.98 mi (7,531.70 km) |
| Round Lake to Cerveteri | 4,788.54 mi (7,706.42 km) |
| Round Lake to Cervia | 4,701.08 mi (7,565.65 km) |
