| Troisdorf to Rivarolo Canavese | 379.85 mi (611.31 km) |
| Troisdorf to Rivoli | 397.39 mi (639.54 km) |
| Troisdorf to Rocca di Papa | 678.80 mi (1,092.43 km) |
| Troisdorf to Rocca Priora | 678.66 mi (1,092.20 km) |
| Troisdorf to Roccapiemonte | 782.92 mi (1,259.99 km) |
| Troisdorf to Roccastrada | 571.43 mi (919.63 km) |
| Troisdorf to Romano di Lombardia | 385.11 mi (619.78 km) |
| Troisdorf to Rome | 666.37 mi (1,072.42 km) |
| Troisdorf to Roncade | 431.53 mi (694.48 km) |
| Troisdorf to Ronchi dei Legionari | 450.75 mi (725.41 km) |
| Troisdorf to Ronciglione | 635.91 mi (1,023.40 km) |
| Troisdorf to Rosa | 411.05 mi (661.52 km) |
| Troisdorf to Rosarno | 954.45 mi (1,536.04 km) |
| Troisdorf to Rosignano Marittimo | 535.39 mi (861.63 km) |
| Troisdorf to Rosolini | 1,040.99 mi (1,675.31 km) |
