| Boulder to Carmignano | 5,418.38 mi (8,720.03 km) |
| Boulder to Carovigno | 5,806.45 mi (9,344.58 km) |
| Boulder to Carpenedolo | 5,322.18 mi (8,565.22 km) |
| Boulder to Carpi | 5,366.20 mi (8,636.07 km) |
| Boulder to Carrara | 5,373.38 mi (8,647.62 km) |
| Boulder to Carugate | 5,275.29 mi (8,489.75 km) |
| Boulder to Casal di Principe | 5,668.12 mi (9,121.96 km) |
| Boulder to Casale Monferrato | 5,264.68 mi (8,472.68 km) |
| Boulder to Casale sul Sile | 5,375.21 mi (8,650.57 km) |
| Boulder to Casalecchio di Reno | 5,394.77 mi (8,682.04 km) |
| Boulder to Casalgrande | 5,370.83 mi (8,643.51 km) |
| Boulder to Casalmaggiore | 5,340.10 mi (8,594.06 km) |
| Boulder to Casalnuovo di Napoli | 5,680.84 mi (9,142.43 km) |
| Boulder to Casalpusterlengo | 5,304.26 mi (8,536.38 km) |
| Boulder to Casaluce | 5,671.32 mi (9,127.11 km) |
