| Penne to Silver Firs (Washington) | 5,646.31 mi (9,086.86 km) |
| Penne to Silver Spring (Maryland) | 4,522.53 mi (7,278.30 km) |
| Penne to Silver Springs Shores (Florida) | 5,169.93 mi (8,320.20 km) |
| Penne to Silverdale (Washington) | 5,670.73 mi (9,126.16 km) |
| Penne to Silverton (Oregon) | 5,831.39 mi (9,384.72 km) |
| Penne to Simi Valley (California) | 6,350.04 mi (10,219.41 km) |
| Penne to Simpsonville (South Carolina) | 4,931.86 mi (7,937.06 km) |
| Penne to Sioux City (Iowa) | 5,147.85 mi (8,284.66 km) |
| Penne to Sioux Falls (South Dakota) | 5,110.05 mi (8,223.83 km) |
| Penne to Skokie (Illinois) | 4,839.93 mi (7,789.11 km) |
| Penne to Sleepy Hollow (New York) | 4,303.40 mi (6,925.65 km) |
| Penne to Slidell (Louisiana) | 5,463.57 mi (8,792.77 km) |
| Penne to Smithfield (North Carolina) | 4,725.14 mi (7,604.38 km) |
| Penne to Smithfield (Utah) | 5,706.15 mi (9,183.16 km) |
| Penne to Smithville (Missouri) | 5,228.41 mi (8,414.32 km) |
