| Watsonville to Idar-Oberstein | 5,693.14 mi (9,162.23 km) |
| Watsonville to Idstein | 5,692.15 mi (9,160.63 km) |
| Watsonville to Illertissen | 5,851.71 mi (9,417.42 km) |
| Watsonville to Illingen | 5,703.85 mi (9,179.46 km) |
| Watsonville to Ilmenau | 5,737.05 mi (9,232.88 km) |
| Watsonville to Ilsede | 5,630.38 mi (9,061.22 km) |
| Watsonville to Ilsenburg | 5,665.23 mi (9,117.31 km) |
| Watsonville to Ilsfeld | 5,782.83 mi (9,306.57 km) |
| Watsonville to Ilvesheim | 5,740.93 mi (9,239.13 km) |
| Watsonville to Immenstadt im Allgau | 5,891.42 mi (9,481.33 km) |
| Watsonville to Ingelheim | 5,699.53 mi (9,172.51 km) |
| Watsonville to Ingolstadt | 5,857.63 mi (9,426.94 km) |
| Watsonville to Iserlohn | 5,612.71 mi (9,032.79 km) |
| Watsonville to Isernhagen-Sud | 5,612.85 mi (9,033.01 km) |
| Watsonville to Ismaning | 5,894.35 mi (9,486.04 km) |
