| Sulphur to Indianapolis (Indiana) | 775.10 mi (1,247.40 km) |
| Sulphur to Indianola (Iowa) | 769.39 mi (1,238.22 km) |
| Sulphur to Indio (California) | 1,359.57 mi (2,188.01 km) |
| Sulphur to Inglewood (California) | 1,481.35 mi (2,384.00 km) |
| Sulphur to Inkster (Michigan) | 1,002.28 mi (1,613.01 km) |
| Sulphur to Inver Grove Heights (Minnesota) | 1,008.62 mi (1,623.22 km) |
| Sulphur to Inwood (New York) | 1,312.15 mi (2,111.70 km) |
| Sulphur to Iona (Florida) | 738.34 mi (1,188.25 km) |
| Sulphur to Ionia (Michigan) | 992.26 mi (1,596.88 km) |
| Sulphur to Iowa City (Iowa) | 796.08 mi (1,281.16 km) |
| Sulphur to Irmo (South Carolina) | 759.33 mi (1,222.02 km) |
| Sulphur to Irondale (Alabama) | 454.58 mi (731.58 km) |
| Sulphur to Ironton (Ohio) | 835.50 mi (1,344.61 km) |
| Sulphur to Irvine (California) | 1,447.65 mi (2,329.76 km) |
| Sulphur to Irving (Texas) | 279.77 mi (450.24 km) |
