Engineered
Honesty.
Re-Track was built out of the frustration of lost PRs and broken activity files. We believe your effort deserves accurate representation — not estimates, not guesses, but the truth.
Core Philosophy
Your activity data is the record of your effort. We treat every file with absolute respect — preserving your performance history exactly as it happened.
Our Mission
Fix broken fitness data so your training history is always complete, accurate, and ready to upload — no matter what your device recorded.
You stay in control
We never auto-correct your data without your input. You review the parsed values, make the changes you want, and download exactly what you approved.
Private by design
Parsing and correction happen entirely in your browser. After you download, anonymised session data (speed, HR, power, cadence, altitude) is stored to improve the service — GPS coordinates are never uploaded or stored. We never sell or share your data.
What we show is what we found
We surface the raw values from your file — no smoothing, no AI guessing. If the file says 0 km, we show 0 km and let you fix it.
Every activity counts
Whether it's an indoor trainer ride, a run with no GPS, or a file that just won't upload — Re-Track helps you keep your training log complete.
How it actually works.
Multi-format file reading
Re-Track reads the binary and XML structure of .FIT, .TCX, and .GPX files directly in your browser. It extracts the real values stored in the file — not a summary, the actual data.
You edit, we rebuild
Change any stat and Re-Track writes a new, valid file with your values baked in — ready for Garmin Connect or Strava.
Correction stays in your browser
Parsing and file generation happen entirely in your browser. Anonymised session data is stored after download to improve the service — GPS coordinates are never uploaded or stored.
Field Stripper
Remove specific fields before sharing your file publicly.
Time Adjuster
Fix the activity date and time with a calendar picker.
Power Adjuster
Apply a correction multiplier to all per-record power values.
Device Changer
Override the device manufacturer and model in the file header.
Peak Remover
Strip HR or power spikes above a threshold you define.
Re-Track is completely free to use.
If Re-Track has saved one of your rides, fixed a broken file, or kept a PR on the board — consider buying me a coffee. It helps keep the servers running and the tool improving.
Buy me a coffee