| Slidell to Hazelwood (Missouri) | 588.61 mi (947.27 km) |
| Slidell to Hazleton (Pennsylvania) | 1,067.20 mi (1,717.49 km) |
| Slidell to Healdsburg (California) | 1,958.70 mi (3,152.22 km) |
| Slidell to Heath (Ohio) | 789.52 mi (1,270.61 km) |
| Slidell to Heber (Utah) | 1,401.69 mi (2,255.81 km) |
| Slidell to Helena (Alabama) | 268.12 mi (431.50 km) |
| Slidell to Helena (Montana) | 1,637.76 mi (2,635.72 km) |
| Slidell to Hemet (California) | 1,607.32 mi (2,586.73 km) |
| Slidell to Henderson (Kentucky) | 536.69 mi (863.72 km) |
| Slidell to Henderson (Nevada) | 1,508.74 mi (2,428.08 km) |
| Slidell to Henderson (North Carolina) | 776.86 mi (1,250.24 km) |
| Slidell to Henderson (Texas) | 323.08 mi (519.95 km) |
| Slidell to Hendersonville (North Carolina) | 549.28 mi (883.98 km) |
| Slidell to Hendersonville (Tennessee) | 454.52 mi (731.48 km) |
| Slidell to Hercules (California) | 1,921.00 mi (3,091.56 km) |
