| Round Rock to Carmignano | 5,611.93 mi (9,031.53 km) |
| Round Rock to Carovigno | 6,013.14 mi (9,677.21 km) |
| Round Rock to Carpenedolo | 5,528.19 mi (8,896.76 km) |
| Round Rock to Carpi | 5,568.90 mi (8,962.28 km) |
| Round Rock to Carrara | 5,563.99 mi (8,954.37 km) |
| Round Rock to Carugate | 5,476.70 mi (8,813.89 km) |
| Round Rock to Casal di Principe | 5,853.62 mi (9,420.49 km) |
| Round Rock to Casale Monferrato | 5,456.52 mi (8,781.43 km) |
| Round Rock to Casale sul Sile | 5,595.06 mi (9,004.38 km) |
| Round Rock to Casalecchio di Reno | 5,596.82 mi (9,007.22 km) |
| Round Rock to Casalgrande | 5,570.54 mi (8,964.92 km) |
| Round Rock to Casalmaggiore | 5,542.06 mi (8,919.08 km) |
| Round Rock to Casalnuovo di Napoli | 5,866.81 mi (9,441.72 km) |
| Round Rock to Casalpusterlengo | 5,503.63 mi (8,857.24 km) |
| Round Rock to Casaluce | 5,857.10 mi (9,426.09 km) |
