Distance from Köln to Troisdorf
How far is it from Köln to Troisdorf? About 12 mi in a straight line and 17 mi by road. Driving time, flight time, midpoint and route details.
Köln and Troisdorf are about 12 mi (20 km) apart in a straight line. By road that works out to roughly 17 mi (28 km), a drive of about 41 min. A nonstop flight covers the great-circle distance in approximately 31 min.
| Straight-line distance | 12 mi / 20 km |
| Road distance (est.) | 17 mi / 28 km |
| Driving time (est.) | 41 min |
| Nonstop flight (est.) | 31 min |
| Driving fuel (est., 1-way) | $2 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 50.871, 7.050 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Köln to Troisdorf is about 12 mi (20 km) in a straight line, and roughly 17 mi (28 km) by road.