| Portland to Illzach | 5,315.76 mi (8,554.89 km) |
| Portland to Ingre | 5,160.67 mi (8,305.29 km) |
| Portland to Irigny | 5,369.51 mi (8,641.39 km) |
| Portland to Isbergues | 5,028.26 mi (8,092.20 km) |
| Portland to Issoire | 5,333.02 mi (8,582.67 km) |
| Portland to Issoudun | 5,219.30 mi (8,399.64 km) |
| Portland to Issy-les-Moulineaux | 5,122.87 mi (8,244.46 km) |
| Portland to Istres | 5,497.04 mi (8,846.63 km) |
| Portland to Ivry-sur-Seine | 5,126.61 mi (8,250.47 km) |
| Portland to Jarville-la-Malgrange | 5,235.57 mi (8,425.84 km) |
| Portland to Jeumont | 5,089.42 mi (8,190.63 km) |
| Portland to Joigny | 5,200.34 mi (8,369.14 km) |
| Portland to Joinville-le-Pont | 5,128.51 mi (8,253.54 km) |
| Portland to Joue-les-Tours | 5,159.44 mi (8,303.32 km) |
| Portland to Jouy-le-Moutier | 5,106.24 mi (8,217.70 km) |
