| Castel Gandolfo to Dalmine | 309.73 mi (498.46 km) |
| Castel Gandolfo to Deruta | 86.27 mi (138.83 km) |
| Castel Gandolfo to Desenzano del Garda | 278.09 mi (447.54 km) |
| Castel Gandolfo to Desio | 317.66 mi (511.22 km) |
| Castel Gandolfo to Dolianova | 244.53 mi (393.54 km) |
| Castel Gandolfo to Dolo | 255.89 mi (411.82 km) |
| Castel Gandolfo to Domodossola | 371.64 mi (598.10 km) |
| Castel Gandolfo to Dorgali | 188.61 mi (303.54 km) |
| Castel Gandolfo to Dueville | 274.10 mi (441.12 km) |
| Castel Gandolfo to Eboli | 147.40 mi (237.22 km) |
| Castel Gandolfo to Elmas | 255.24 mi (410.77 km) |
| Castel Gandolfo to Empoli | 161.19 mi (259.40 km) |
| Castel Gandolfo to Enna | 301.68 mi (485.50 km) |
| Castel Gandolfo to Eraclea | 265.07 mi (426.60 km) |
| Castel Gandolfo to Erba | 329.22 mi (529.83 km) |
