| Portchester to Somersworth (New Hampshire) | 3,201.68 mi (5,152.61 km) |
| Portchester to Somerton (Arizona) | 5,401.16 mi (8,692.32 km) |
| Portchester to Somerville (Massachusetts) | 3,245.11 mi (5,222.50 km) |
| Portchester to Somerville (New Jersey) | 3,465.84 mi (5,577.73 km) |
| Portchester to Sonoma (California) | 5,329.34 mi (8,576.74 km) |
| Portchester to Soquel (California) | 5,388.19 mi (8,671.46 km) |
| Portchester to South Bend (Indiana) | 3,886.98 mi (6,255.49 km) |
| Portchester to South Bradenton (Florida) | 4,411.43 mi (7,099.52 km) |
| Portchester to South Burlington (Vermont) | 3,249.30 mi (5,229.25 km) |
| Portchester to South Charleston (West Virginia) | 3,855.99 mi (6,205.61 km) |
| Portchester to South Daytona (Florida) | 4,260.22 mi (6,856.16 km) |
| Portchester to South El Monte (California) | 5,432.54 mi (8,742.83 km) |
| Portchester to South Elgin (Illinois) | 3,952.01 mi (6,360.15 km) |
| Portchester to South Euclid (Ohio) | 3,706.20 mi (5,964.56 km) |
| Portchester to South Farmingdale (New York) | 3,411.42 mi (5,490.16 km) |
