| Spencer to Idar-Oberstein | 4,503.33 mi (7,247.40 km) |
| Spencer to Idstein | 4,514.88 mi (7,265.99 km) |
| Spencer to Illertissen | 4,665.96 mi (7,509.14 km) |
| Spencer to Illingen | 4,508.49 mi (7,255.71 km) |
| Spencer to Ilmenau | 4,584.55 mi (7,378.13 km) |
| Spencer to Ilsede | 4,490.47 mi (7,226.72 km) |
| Spencer to Ilsenburg | 4,524.41 mi (7,281.34 km) |
| Spencer to Ilsfeld | 4,599.80 mi (7,402.67 km) |
| Spencer to Ilvesheim | 4,557.49 mi (7,334.58 km) |
| Spencer to Immenstadt im Allgau | 4,699.84 mi (7,563.66 km) |
| Spencer to Ingelheim | 4,517.95 mi (7,270.93 km) |
| Spencer to Ingolstadt | 4,687.95 mi (7,544.53 km) |
| Spencer to Iserlohn | 4,444.30 mi (7,152.40 km) |
| Spencer to Isernhagen-Sud | 4,472.50 mi (7,197.79 km) |
| Spencer to Ismaning | 4,720.88 mi (7,597.52 km) |
