| Swansea to Illzach | 4,613.19 mi (7,424.21 km) |
| Swansea to Ingre | 4,388.30 mi (7,062.28 km) |
| Swansea to Irigny | 4,589.24 mi (7,385.67 km) |
| Swansea to Isbergues | 4,323.50 mi (6,958.01 km) |
| Swansea to Issoire | 4,528.92 mi (7,288.58 km) |
| Swansea to Issoudun | 4,428.18 mi (7,126.46 km) |
| Swansea to Issy-les-Moulineaux | 4,375.84 mi (7,042.23 km) |
| Swansea to Istres | 4,675.63 mi (7,524.70 km) |
| Swansea to Ivry-sur-Seine | 4,380.54 mi (7,049.80 km) |
| Swansea to Jarville-la-Malgrange | 4,536.16 mi (7,300.24 km) |
| Swansea to Jeumont | 4,397.82 mi (7,077.61 km) |
| Swansea to Joigny | 4,449.49 mi (7,160.76 km) |
| Swansea to Joinville-le-Pont | 4,383.99 mi (7,055.34 km) |
| Swansea to Joue-les-Tours | 4,360.00 mi (7,016.74 km) |
| Swansea to Jouy-le-Moutier | 4,360.40 mi (7,017.39 km) |
