| Southborough to Coldwater (Michigan) | 3,869.40 mi (6,227.20 km) |
| Southborough to Colesville (Maryland) | 3,679.50 mi (5,921.59 km) |
| Southborough to College (Alaska) | 4,240.55 mi (6,824.50 km) |
| Southborough to College Park (Georgia) | 4,239.08 mi (6,822.14 km) |
| Southborough to College Park (Maryland) | 3,680.18 mi (5,922.68 km) |
| Southborough to College Station (Texas) | 4,867.63 mi (7,833.69 km) |
| Southborough to Collegedale (Tennessee) | 4,194.40 mi (6,750.24 km) |
| Southborough to Colleyville (Texas) | 4,781.60 mi (7,695.24 km) |
| Southborough to Collierville (Tennessee) | 4,381.20 mi (7,050.86 km) |
| Southborough to Collinsville (Illinois) | 4,216.38 mi (6,785.61 km) |
| Southborough to Colonia (New Jersey) | 3,502.75 mi (5,637.12 km) |
| Southborough to Colonial Heights (Virginia) | 3,777.39 mi (6,079.11 km) |
| Southborough to Colonial Park (Pennsylvania) | 3,617.31 mi (5,821.50 km) |
| Southborough to Colorado Springs (Colorado) | 4,751.25 mi (7,646.40 km) |
| Southborough to Colton (California) | 5,439.42 mi (8,753.90 km) |
