| Potomac to Idar-Oberstein | 4,015.05 mi (6,461.61 km) |
| Potomac to Idstein | 4,039.32 mi (6,500.66 km) |
| Potomac to Illertissen | 4,172.98 mi (6,715.76 km) |
| Potomac to Illingen | 4,013.97 mi (6,459.86 km) |
| Potomac to Ilmenau | 4,130.80 mi (6,647.88 km) |
| Potomac to Ilsede | 4,055.32 mi (6,526.41 km) |
| Potomac to Ilsenburg | 4,086.25 mi (6,576.18 km) |
| Potomac to Ilsfeld | 4,113.34 mi (6,619.77 km) |
| Potomac to Ilvesheim | 4,072.98 mi (6,554.82 km) |
| Potomac to Immenstadt im Allgau | 4,198.87 mi (6,757.43 km) |
| Potomac to Ingelheim | 4,037.64 mi (6,497.95 km) |
| Potomac to Ingolstadt | 4,210.53 mi (6,776.20 km) |
| Potomac to Iserlohn | 3,982.25 mi (6,408.82 km) |
| Potomac to Isernhagen-Sud | 4,038.00 mi (6,498.53 km) |
| Potomac to Ismaning | 4,237.71 mi (6,819.93 km) |
