| Southborough to Chickasha (Oklahoma) | 4,701.51 mi (7,566.35 km) |
| Southborough to Chico (California) | 5,250.48 mi (8,449.83 km) |
| Southborough to Chicopee (Massachusetts) | 3,364.26 mi (5,414.25 km) |
| Southborough to Chillicothe (Ohio) | 3,909.71 mi (6,292.06 km) |
| Southborough to Chillum (Maryland) | 3,683.36 mi (5,927.79 km) |
| Southborough to Chino (California) | 5,454.43 mi (8,778.06 km) |
| Southborough to Chino Hills (California) | 5,458.24 mi (8,784.19 km) |
| Southborough to Chino Valley (Arizona) | 5,236.77 mi (8,427.77 km) |
| Southborough to Chippewa Falls (Wisconsin) | 3,972.76 mi (6,393.54 km) |
| Southborough to Choctaw (Oklahoma) | 4,653.23 mi (7,488.65 km) |
| Southborough to Chowchilla (California) | 5,356.11 mi (8,619.83 km) |
| Southborough to Christiansburg (Virginia) | 3,906.61 mi (6,287.09 km) |
| Southborough to Chubbuck (Idaho) | 4,789.94 mi (7,708.66 km) |
| Southborough to Chula Vista (California) | 5,510.42 mi (8,868.16 km) |
| Southborough to Cibolo (Texas) | 4,996.05 mi (8,040.37 km) |
