| Sulphur to Hutchinson (Kansas) | 600.66 mi (966.66 km) |
| Sulphur to Hutchinson (Minnesota) | 1,014.21 mi (1,632.21 km) |
| Sulphur to Hutto (Texas) | 250.49 mi (403.13 km) |
| Sulphur to Hyattsville (Maryland) | 1,108.29 mi (1,783.61 km) |
| Sulphur to Hybla Valley (Virginia) | 1,095.37 mi (1,762.83 km) |
| Sulphur to Idaho Falls (Idaho) | 1,374.54 mi (2,212.10 km) |
| Sulphur to Idylwood (Virginia) | 1,094.06 mi (1,760.72 km) |
| Sulphur to Ilchester (Maryland) | 1,125.51 mi (1,811.33 km) |
| Sulphur to Immokalee (Florida) | 771.27 mi (1,241.24 km) |
| Sulphur to Imperial (California) | 1,318.16 mi (2,121.38 km) |
| Sulphur to Imperial Beach (California) | 1,407.69 mi (2,265.46 km) |
| Sulphur to Independence (Kentucky) | 782.83 mi (1,259.85 km) |
| Sulphur to Independence (Missouri) | 614.65 mi (989.18 km) |
| Sulphur to Indian Trail (North Carolina) | 810.78 mi (1,304.82 km) |
| Sulphur to Indiana (Pennsylvania) | 1,072.13 mi (1,725.43 km) |
