| Southborough to Frederick (Maryland) | 3,680.31 mi (5,922.88 km) |
| Southborough to Fredericksburg (Texas) | 4,985.06 mi (8,022.68 km) |
| Southborough to Fredericksburg (Virginia) | 3,734.17 mi (6,009.56 km) |
| Southborough to Frederickson (Washington) | 4,843.80 mi (7,795.35 km) |
| Southborough to Freeport (Illinois) | 4,030.75 mi (6,486.87 km) |
| Southborough to Freeport (New York) | 3,470.26 mi (5,584.85 km) |
| Southborough to Freeport (Texas) | 4,915.66 mi (7,910.98 km) |
| Southborough to Fremont (California) | 5,384.69 mi (8,665.82 km) |
| Southborough to Fremont (Nebraska) | 4,325.16 mi (6,960.68 km) |
| Southborough to Fremont (Ohio) | 3,822.72 mi (6,152.07 km) |
| Southborough to French Valley (California) | 5,458.14 mi (8,784.02 km) |
| Southborough to Fresno (California) | 5,361.38 mi (8,628.31 km) |
| Southborough to Fresno (Texas) | 4,889.38 mi (7,868.69 km) |
| Southborough to Fridley (Minnesota) | 4,033.36 mi (6,491.07 km) |
| Southborough to Friendly (Maryland) | 3,691.98 mi (5,941.67 km) |
