| Southborough to Cottage Grove (Oregon) | 5,052.02 mi (8,130.44 km) |
| Southborough to Cottage Lake (Washington) | 4,798.92 mi (7,723.11 km) |
| Southborough to Cottonwood (Arizona) | 5,225.04 mi (8,408.90 km) |
| Southborough to Cottonwood Heights (Utah) | 4,895.13 mi (7,877.96 km) |
| Southborough to Council Bluffs (Iowa) | 4,311.96 mi (6,939.42 km) |
| Southborough to Country Club (Florida) | 4,445.28 mi (7,153.99 km) |
| Southborough to Country Club Hills (Illinois) | 3,992.00 mi (6,424.50 km) |
| Southborough to Country Walk (Florida) | 4,466.10 mi (7,187.49 km) |
| Southborough to Covina (California) | 5,455.33 mi (8,779.51 km) |
| Southborough to Covington (Georgia) | 4,215.28 mi (6,783.84 km) |
| Southborough to Covington (Kentucky) | 3,984.42 mi (6,412.30 km) |
| Southborough to Covington (Louisiana) | 4,625.78 mi (7,444.47 km) |
| Southborough to Covington (Washington) | 4,821.34 mi (7,759.19 km) |
| Southborough to Cranston (Rhode Island) | 3,336.85 mi (5,370.15 km) |
| Southborough to Crawfordsville (Indiana) | 4,030.91 mi (6,487.12 km) |
