A loop track starts wherever its author started — rarely where you want to. This tool re-anchors the round: pick a spot, and the track is re-threaded from there, the old seam closed cleanly and the times rebuilt in order. It only makes sense on closed loops — if start and finish are far apart, the tool tells you the gap instead of hiding a bad seam.
FAQ
What happens to my file?
Your file is sent to the Reisezoom server for processing, handled there and deleted immediately — nothing is stored. So that the web tool and the desktop app arrive at the same number, both use the same component — and that one runs on the server.
How do I know my track is a loop?
After applying, the result reports the distance between the original start and finish. Below ~250 m counts as closed; anything bigger and you'll see a warning with the exact gap.
What happens to the times?
They are rebuilt: the tour still begins at the original start time, and the gaps between points are carried over — so the pace profile survives the move.
Can I move the start of an out-and-back track?
Not meaningfully — there is no round to rotate. Use <a href="../reverse-gpx/">Reverse</a> to start from the other end, or <a href="../split-gpx/">Split</a> to cut it.
Why is there one point more afterwards?
The new start point is appended at the end again so the loop closes exactly where it now begins — that's the one duplicated point.