| San Mateo to Castle Pines (Colorado) | 950.68 mi (1,529.97 km) |
| San Mateo to Castle Rock (Colorado) | 951.36 mi (1,531.06 km) |
| San Mateo to Castro Valley (California) | 17.42 mi (28.04 km) |
| San Mateo to Catalina Foothills (Arizona) | 741.21 mi (1,192.86 km) |
| San Mateo to Cataño (Puerto Rico) | 3,613.71 mi (5,815.70 km) |
| San Mateo to Cathedral City (California) | 416.50 mi (670.29 km) |
| San Mateo to Catonsville (Maryland) | 2,443.80 mi (3,932.91 km) |
| San Mateo to Cave Spring (Virginia) | 2,302.42 mi (3,705.39 km) |
| San Mateo to Cayce (South Carolina) | 2,309.03 mi (3,716.03 km) |
| San Mateo to Cayey (Puerto Rico) | 3,625.06 mi (5,833.97 km) |
| San Mateo to Cedar City (Utah) | 504.29 mi (811.57 km) |
| San Mateo to Cedar Falls (Iowa) | 1,607.55 mi (2,587.09 km) |
| San Mateo to Cedar Hill (Texas) | 1,469.44 mi (2,364.83 km) |
| San Mateo to Cedar Lake (Indiana) | 1,866.12 mi (3,003.24 km) |
| San Mateo to Cedar Mill (Oregon) | 552.17 mi (888.63 km) |
