| Apex to Indianola (Iowa) | 882.76 mi (1,420.67 km) |
| Apex to Indio (California) | 2,113.17 mi (3,400.81 km) |
| Apex to Inglewood (California) | 2,226.52 mi (3,583.24 km) |
| Apex to Inkster (Michigan) | 512.54 mi (824.85 km) |
| Apex to Inver Grove Heights (Minnesota) | 974.52 mi (1,568.33 km) |
| Apex to Inwood (New York) | 437.99 mi (704.88 km) |
| Apex to Iona (Florida) | 661.74 mi (1,064.97 km) |
| Apex to Ionia (Michigan) | 600.30 mi (966.10 km) |
| Apex to Iowa City (Iowa) | 794.92 mi (1,279.30 km) |
| Apex to Irmo (South Carolina) | 172.78 mi (278.06 km) |
| Apex to Irondale (Alabama) | 467.41 mi (752.22 km) |
| Apex to Ironton (Ohio) | 285.54 mi (459.53 km) |
| Apex to Irvine (California) | 2,199.75 mi (3,540.16 km) |
| Apex to Irving (Texas) | 1,050.19 mi (1,690.11 km) |
| Apex to Isabela (Puerto Rico) | 1,392.88 mi (2,241.62 km) |
