Garmin pool swim FIT repair
Make a questionable swim record easier to review.
Garmin pool activities can record an extra turn or miss a length when a push-off, pause, drill, or pool-size setting does not line up with the watch’s expectations. SwimLapFix reads the original FIT activity and explains high-confidence length patterns before it prepares a repaired copy.
What the repair does
The deterministic analyzer learns a swimmer-specific baseline from active lengths. It can split an unusually long length when its time closely matches two to four typical lengths, or merge adjacent short fragments when their combined time resembles one normal length. It preserves aggregate time and strokes, rebuilds relevant summaries, and validates the resulting FIT file.
Review first, download second
No correction is guaranteed. Ambiguous swims, drills, stops, and sensor gaps may be left unchanged. You can inspect the proposed comparison, keep the original export, and report a wrong detection before downloading a copy.