| Janesville to Isabela (Puerto Rico) | 2,108.38 mi (3,393.11 km) |
| Janesville to Iselin (New Jersey) | 771.90 mi (1,242.26 km) |
| Janesville to Isla Vista (California) | 1,750.65 mi (2,817.40 km) |
| Janesville to Issaquah (Washington) | 1,632.25 mi (2,626.85 km) |
| Janesville to Ithaca (New York) | 636.26 mi (1,023.96 km) |
| Janesville to Ives Estates (Florida) | 1,258.70 mi (2,025.68 km) |
| Janesville to Jackson (Michigan) | 236.90 mi (381.26 km) |
| Janesville to Jackson (Mississippi) | 719.46 mi (1,157.86 km) |
| Janesville to Jackson (Missouri) | 368.17 mi (592.52 km) |
| Janesville to Jackson (Tennessee) | 485.93 mi (782.03 km) |
| Janesville to Jackson (Wyoming) | 1,096.43 mi (1,764.53 km) |
| Janesville to Jacksonville (Alabama) | 638.16 mi (1,027.01 km) |
| Janesville to Jacksonville (Arkansas) | 564.66 mi (908.74 km) |
| Janesville to Jacksonville (Florida) | 944.89 mi (1,520.65 km) |
| Janesville to Jacksonville (Illinois) | 213.84 mi (344.14 km) |
