Guides & Tutorials
Learn how to merge, fix, and manage your GPS activity files
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.
tutorialHow 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.
device-comboHow 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.
scenarioGarmin Died Mid-Ride? How to Recover and Merge Your Data
Your Garmin battery died mid-ride and you finished on your phone. Learn how to merge both recordings into one complete activity for Strava.
tutorialHow to Merge FIT Files from Garmin, Wahoo & Coros
Merge multiple FIT files into one activity. Combine Garmin, Wahoo, and Coros recordings with all sensor data preserved — free with TrailBlender.
tutorialHow to Trim Warmup and Cooldown from GPX Before Uploading to Strava
Remove warmup loops and cooldown segments from your GPX file before uploading to Strava. Trim your ride to keep only the data that matters.
tutorialHow to Fix GPS Drift and Tunnel Gaps in Cycling Files
Fix GPS drift, tunnel gaps, and signal loss in your cycling GPX and FIT files. Remove spikes, smooth tracks, and get accurate Strava data.
device-comboHow to Combine Power and Heart Rate Data from Two Devices
Merge power meter data from your head unit with heart rate from your watch into one file. Get complete training data in a single Strava activity.
device-comboHow to Merge Wahoo and Garmin Ride Data
Combine Wahoo ELEMNT and Garmin Edge ride data into one activity. Merge sensor channels from both devices for a complete Strava upload.
scenarioHow to Split a Multi-Day Ride into Separate Strava Activities
Split a multi-day bikepacking or touring GPX file into separate daily activities for Strava. Keep each day as its own upload with accurate stats.