| Troisdorf to Grevena | 1,010.59 mi (1,626.38 km) |
| Troisdorf to Ialysos | 1,437.05 mi (2,312.71 km) |
| Troisdorf to Ilion | 1,197.28 mi (1,926.84 km) |
| Troisdorf to Ilioupoli | 1,204.44 mi (1,938.35 km) |
| Troisdorf to Ioannina | 1,015.40 mi (1,634.13 km) |
| Troisdorf to Irakleio | 1,394.72 mi (2,244.58 km) |
| Troisdorf to Irakleio | 1,198.56 mi (1,928.89 km) |
| Troisdorf to Kaisariani | 1,202.78 mi (1,935.68 km) |
| Troisdorf to Kalamaria | 1,035.61 mi (1,666.65 km) |
| Troisdorf to Kalamata | 1,203.54 mi (1,936.91 km) |
| Troisdorf to Kallithea | 1,201.87 mi (1,934.23 km) |
| Troisdorf to Kalymnos | 1,365.45 mi (2,197.48 km) |
| Troisdorf to Kalyvia Thorikou | 1,215.43 mi (1,956.04 km) |
| Troisdorf to Kamatero | 1,196.22 mi (1,925.14 km) |
| Troisdorf to Karditsa | 1,065.76 mi (1,715.18 km) |
