| Slidell to Harrison (Ohio) | 681.22 mi (1,096.32 km) |
| Slidell to Harrison (Wisconsin) | 964.17 mi (1,551.67 km) |
| Slidell to Harrisonburg (Virginia) | 837.92 mi (1,348.50 km) |
| Slidell to Hartford (Connecticut) | 1,237.55 mi (1,991.65 km) |
| Slidell to Hartford (Wisconsin) | 903.84 mi (1,454.59 km) |
| Slidell to Hartselle (Alabama) | 331.27 mi (533.13 km) |
| Slidell to Hartsville (Tennessee) | 470.68 mi (757.49 km) |
| Slidell to Harvey (Illinois) | 791.01 mi (1,273.01 km) |
| Slidell to Harvey (Louisiana) | 32.49 mi (52.29 km) |
| Slidell to Hasbrouck Heights (New Jersey) | 1,142.67 mi (1,838.96 km) |
| Slidell to Haslett (Michigan) | 911.00 mi (1,466.11 km) |
| Slidell to Hastings (Minnesota) | 1,011.81 mi (1,628.35 km) |
| Slidell to Hastings (Nebraska) | 860.34 mi (1,384.58 km) |
| Slidell to Hattiesburg (Mississippi) | 75.62 mi (121.70 km) |
| Slidell to Hauppauge (New York) | 1,178.59 mi (1,896.75 km) |
