| San Marcos to Channelview (Texas) | 1,317.90 mi (2,120.96 km) |
| San Marcos to Chantilly (Virginia) | 2,237.74 mi (3,601.30 km) |
| San Marcos to Chaparral (New Mexico) | 631.10 mi (1,015.66 km) |
| San Marcos to Chapel Hill (North Carolina) | 2,165.51 mi (3,485.05 km) |
| San Marcos to Charleston (Illinois) | 1,664.95 mi (2,679.48 km) |
| San Marcos to Charleston (South Carolina) | 2,145.08 mi (3,452.18 km) |
| San Marcos to Charleston (West Virginia) | 2,012.76 mi (3,239.23 km) |
| San Marcos to Charlotte (North Carolina) | 2,071.01 mi (3,332.97 km) |
| San Marcos to Charlottesville (Virginia) | 2,184.24 mi (3,515.19 km) |
| San Marcos to Chaska (Minnesota) | 1,492.69 mi (2,402.25 km) |
| San Marcos to Chatham (Illinois) | 1,586.46 mi (2,553.16 km) |
| San Marcos to Chattanooga (Tennessee) | 1,823.70 mi (2,934.96 km) |
| San Marcos to Cheat Lake (West Virginia) | 2,107.96 mi (3,392.43 km) |
| San Marcos to Chelsea (Alabama) | 1,758.95 mi (2,830.75 km) |
| San Marcos to Chelsea (Massachusetts) | 2,566.95 mi (4,131.11 km) |
