| Thetford to Illzach | 433.27 mi (697.28 km) |
| Thetford to Ingre | 313.87 mi (505.12 km) |
| Thetford to Irigny | 500.65 mi (805.72 km) |
| Thetford to Isbergues | 143.82 mi (231.46 km) |
| Thetford to Issoire | 487.75 mi (784.97 km) |
| Thetford to Issoudun | 381.50 mi (613.97 km) |
| Thetford to Issy-les-Moulineaux | 256.68 mi (413.08 km) |
| Thetford to Istres | 644.97 mi (1,037.98 km) |
| Thetford to Ivry-sur-Seine | 258.99 mi (416.80 km) |
| Thetford to Jarville-la-Malgrange | 352.52 mi (567.33 km) |
| Thetford to Jeumont | 205.88 mi (331.34 km) |
| Thetford to Joigny | 327.67 mi (527.34 km) |
| Thetford to Joinville-le-Pont | 259.30 mi (417.31 km) |
| Thetford to Joue-les-Tours | 349.53 mi (562.52 km) |
| Thetford to Jouy-le-Moutier | 241.63 mi (388.86 km) |
