GPX Repair — Fix a Broken or Rejected GPX File, Offline
Drop a GPX file that Strava, Garmin Connect or your GPS rejects into TrailBlender and get a clean one back. The repair runs on your own computer; nothing is uploaded.
No upload · No account · Works without an internet connection
Repair a GPX file in three steps
- 01
Drop in the broken GPX file
Drag the file into TrailBlender. Its parser is more tolerant than most upload pages, so files Strava or Garmin Connect refuse can often still be read.
- 02
Review what was found
Spikes, tunnel gaps, truncated endings and duplicate points are highlighted on the map. You decide which fixes to apply.
- 03
Export and upload the clean file
Save the repaired track as GPX (or FIT) and upload it to Strava, Garmin Connect, Komoot or your GPS like any other file.
Ready to repair your GPX file?
Download TrailBlender, drop in the broken file and export a clean track in under a minute.
What GPX repair fixes
The problems that make a GPX file get rejected or look wrong:
Broken XML
Files cut off when a battery died or a sync was interrupted, so the closing tags are missing and uploads fail with “invalid file”.
Missing timestamps
Track points without usable times, which stop Strava from calculating speed, pace and moving time.
GPS drift
Spikes that throw you 500 m off the road and back, inflating distance and breaking segment matches.
Tunnel gaps
Signal loss that leaves a ruler-straight line through a mountain; the gap is bridged along the likely route.
Duplicate points
Repeated coordinates and timestamps from interrupted recordings that confuse speed and elevation calculations.
Not sure what is wrong with your file? Validate it first, then repair only what needs it.
Your tracks stay on your computer
TrailBlender is a desktop application, not a web service. Your GPX files are read from disk, repaired in memory and written back to disk. There is no upload step and no account to create.
That also means offline GPX repair works on a train, in a hotel lobby or at a campsite with no signal. Once the app is installed, an internet connection is never required.
Check the file before you repair it
The free GPX inspector shows whether your file parses, how many points it holds and what looks off, right in your browser.
Validate a GPX file with InspectGPX repair questions
How do I do a GPX repair on a corrupted file?
Open the file in TrailBlender, review the problems it highlights (truncated ending, spikes, gaps), apply the fixes you want and export a new GPX. The original file is never overwritten.
Can I repair a GPX file online?
You do not have to. TrailBlender repairs GPX files on your own computer, so the track never leaves your machine and there is no file size limit imposed by a web service.
Why does Strava say my GPX file is invalid?
Usually the file is truncated, has missing timestamps or contains broken XML. TrailBlender can often read such a file anyway and export a version Strava accepts. Completely empty files cannot be recovered.
Can it fix GPS drift and tunnel gaps in a GPX file?
Yes. Spikes are removed and tunnel gaps are bridged along the expected route, so distance, speed and elevation recalculate from clean data.
Is the GPX repair tool really free?
Yes. The current version of TrailBlender is free to download and use, with no account, trial period or watermark on the exported file.
Step-by-step GPX repair guides
Want the full walkthrough for your situation? Start with the main GPX repair guide.
GPX File Repair: Remove GPS Spikes, Trim Errors
Free GPX file repair for Garmin files: find and remove GPS spikes, trim bad data, export a clean GPX or FIT. Runs on your computer; limits explained.
Fix GPS Drift in GPX and FIT Files: Remove Spikes
Fix GPS drift and position spikes in GPX and FIT files: detect the jumps, remove them, check your distance. Tunnel gaps are not filled.
Garmin Died Mid-Ride? Recover and Merge It
Yes, your Garmin saved the ride until it died. Find the .FIT file, recover it via Garmin Connect or USB, and merge it with your second recording.
Merge Strava Activities: Combine GPX Files
Strava can't merge two activities. Export both, merge GPX or FIT files in TrailBlender, upload one ride, delete the duplicates. Free, offline.