| Cities | Distance |
|---|---|
| Troisdorf to Oria | 872.26 mi (1,403.77 km) |
| Troisdorf to Oristano | 757.01 mi (1,218.28 km) |
| Troisdorf to Orta Nova | 771.95 mi (1,242.33 km) |
| Troisdorf to Orte | 628.00 mi (1,010.66 km) |
| Troisdorf to Ortona | 677.86 mi (1,090.91 km) |
| Troisdorf to Orvieto | 606.31 mi (975.76 km) |
| Troisdorf to Orzinuovi | 395.48 mi (636.46 km) |
| Troisdorf to Osimo | 586.95 mi (944.60 km) |
| Troisdorf to Ospitaletto | 387.46 mi (623.56 km) |
| Troisdorf to Ostuni | 857.19 mi (1,379.52 km) |
| Troisdorf to Ottaviano | 772.66 mi (1,243.47 km) |
| Troisdorf to Ovada | 432.34 mi (695.79 km) |
| Troisdorf to Ozieri | 712.45 mi (1,146.57 km) |
| Troisdorf to Paceco | 925.15 mi (1,488.89 km) |
| Troisdorf to Pachino | 1,050.26 mi (1,690.23 km) |