Guides & Tutorials

Learn how to merge, fix, and manage your GPS activity files

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How to Merge GPX Files for Strava

Learn how to merge multiple GPX files into one activity for Strava upload. Step-by-step guide using TrailBlender — free, offline, no upload required.

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How to Fix a Corrupted GPX File from Garmin

Fix corrupted GPX files from Garmin Edge, Forerunner & Fenix devices. Diagnose GPS gaps, spikes, and missing data — then repair with TrailBlender for free.

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How to Merge Garmin and Apple Watch Ride Data

Combine Garmin Edge power data with Apple Watch heart rate into one activity file. Step-by-step merge guide using TrailBlender — free and offline.