How to Combine Strava Activities Into One Ride or Run
Stopped your ride or run by mistake? Here is exactly how to combine Strava activities into one, for free, using FIT, GPX or TCX files. Nothing is uploaded.
How to combine Strava activities: export the original files for both recordings, merge them with a free combiner, then upload the merged file to Strava as one activity. It takes about a minute, works with FIT, GPX and TCX files, and keeps your distance, time, map and heart rate intact.
Maybe you stopped your Garmin to grab water. Maybe a pocket pressed the stop button, or you decided to keep going after you saved the run. Either way, Strava now shows two activities instead of the one ride you actually did, and your weekly totals, segments and records are split in half.
Quick answer
- Export the original file for each part from Strava or Garmin Connect.
- Open the free Strava Activity Combiner and add both files.
- Set which part comes first and name the new file.
- Click Combine Strava Activities and check the totals.
- Upload the merged file to Strava, then delete the two originals.
Can You Combine Activities in Strava?
No. Strava has no merge button in the app or on the website. The Strava Help Center says there is no way to merge two or more activities on Strava and points to third party tools that combine the files instead. That is the workaround this guide walks through: merge the files first, then upload the result as a new activity.
Why Strava Splits One Workout Into Two Activities
Strava treats every uploaded file as its own activity. Your watch or bike computer saves a new file each time a recording ends, so anything that ends a recording early creates a second activity. The usual causes are:
- An accidental stop or save. A button press in a pocket or on a handlebar mount ends the recording.
- A pause that turned into a save. You paused for a coffee, then chose Save instead of Resume.
- A change of mind. You finished, then decided to keep going and started a new recording.
- A dead battery or app crash. The phone app or watch restarts and begins a fresh file.
- Switching devices mid workout. For example, a watch for the first hour and a bike computer for the rest.
Garmin, Wahoo, Polar, Suunto and most GPS devices save activities as FIT files, a compact format that holds GPS points, heart rate, cadence and a session summary. Once a file is saved, the device does not know a second file belongs to the same workout. Each file lands in Strava with its own distance, its own moving time and its own spot on your weekly mileage chart. A long ride quietly becomes two short ones, which throws off pace zones, training load and personal records that platforms calculate per activity.
What Happens Behind the Scenes When You Combine Strava Activities
Manually editing a FIT file is not realistic for most people. It is a binary format built around a defined message structure, not something you can open in a text editor and fix by hand. You can read how it is structured in Garmin’s own FIT Protocol documentation. A proper merge tool has to parse both files, recalculate the session totals (distance, timer time, calories, elevation gain and a time weighted average heart rate), and rebuild a valid file the platform will accept on upload. Get any of that wrong and Strava either rejects the file or imports it with broken stats.
What You Need Before You Combine Two Activities
- The original file for each part. FIT is best because it keeps the most data, but GPX and TCX work too.
- Two or more activities of the same sport. The combiner warns you if the sport types differ.
- Nothing else. The order you upload the files in does not matter, because GPS and heart rate data are always stitched together in true time order.
How to Combine Strava Activities Step by Step
Export the original files
From Strava: open the activity on strava.com, click the three dots (Actions) menu, and choose Export Original. Repeat for the second activity. If Export Original is missing, choose Export GPX instead.
From Garmin Connect: open the activity, click the gear icon, and choose Export Original. The file may arrive compressed, so open the folder to find the .fit file inside. Garmin Connect exports one activity at a time, so repeat for the second part.
From Wahoo, Polar or Suunto: download the FIT file from the companion app or its web dashboard, or from the folder your device syncs to.
Open the Strava Activity Combiner and add your files
Open the free Strava Activity Combiner, then click the upload area or drag and drop your FIT, GPX or TCX files. Each file is read instantly, and the tool shows its sport, start time, distance and duration so you can confirm you picked the right ones.
Set the order and name the new file
Use the arrows to choose which part comes first. This controls lap order and which part counts first in the stats, while your GPS and heart rate data still play back in real chronological order. Type a file name, or leave it blank and the tool picks a default such as Cycling_040826_All.fit. FIT files in give you a FIT file out, and mixed formats are exported as GPX for maximum compatibility.
Combine and check the totals
Click Combine Strava Activities. The result card shows total distance, total span, average and max heart rate, ascent and descent, and track points. Check that the distance is roughly the sum of both parts.
Upload to Strava and delete the originals
Download the combined file, then upload it on strava.com using Upload activity and choosing the file. Check that the new activity looks right, then delete the two original activities so you do not count the same distance and calories twice.
What the Combined Activity Contains
Knowing how to combine Strava activities also means knowing what ends up in the file. The combiner does not just glue files together. It rebuilds the session totals so Strava sees one clean activity.
| Data | How it is handled |
|---|---|
| Distance | Recalculated from the combined track |
| Total span | From the start of the first part to the end of the last part |
| Heart rate | Average is weighted by time, max is the highest reading |
| Elevation | Ascent and descent are recalculated |
| GPS, heart rate and cadence points | Kept and ordered by timestamp |
| The gap between parts | Kept as a real pause, not deleted |
What Happens to Kudos and Comments
Strava states that deleting the original activities also removes their kudos and comments. If those matter to you, upload the combined activity first, confirm it looks right, and only then delete the originals. Friends can give kudos again on the new activity.
How to Combine Garmin Activities
Here is how to combine Strava activities when your history lives in Garmin Connect, and the same steps work there too. Export the original FIT files from Garmin Connect, merge them with the combiner, then upload the merged file to Garmin Connect through its import option. Delete the two originals afterwards. The tool works with files from any brand, including Wahoo, Polar, Suunto and phone apps, so you can also combine activities recorded on two different devices.
Is It Safe to Use an Online Activity Combiner?
Yes. The combiner runs entirely in your browser using the File and Blob APIs. Your files are never uploaded to a server, and the tool has no upload endpoint at all. Your routes, which can reveal where you live, stay on your own device.
Troubleshooting
If something goes wrong while you learn how to combine Strava activities, check these common fixes first.
| Problem | What to do |
|---|---|
| Strava rejects the merged file | Use the original FIT files from your device, not files edited elsewhere, or combine GPX files instead |
| The tool warns about different sports | Combine only activities of the same type, for example two runs or two rides |
| Stats differ slightly from the tool | Strava can recalculate moving time and elevation after upload, so small differences are normal |
| The activities overlap in time | Check the order and start times in the file list before combining |
| Garmin Connect gives a compressed file | Open the folder and use the .fit file inside |
Free Tool
Strava Activity Combiner
Add the two or more FIT, GPX or TCX files from your split workout, set which one comes first if needed, and the tool merges them into a single file with correctly recalculated distance, time, elevation gain and heart rate. Everything runs right in your browser, nothing gets uploaded to a server.
Summary: How to Combine Strava Activities in Under a Minute
Splitting an activity by accident is a small mistake with an outsized effect on your data, and it is an easy fix. Now you know how to combine Strava activities: export the original files for both parts, run them through the free combiner, download the merged file and upload it to Strava or Garmin Connect as one clean activity. Delete the two originals afterward so you do not double count distance or calories, and your training log goes right back to matching what actually happened. Want more free tools like this? Browse the Health and Fitness tools.
FAQ: How to Combine Strava Activities
No. Strava has no built in merge. As the Strava Help Center explains, you combine the original files with a tool like the Strava Activity Combiner, then upload the result as a new activity.
Export the original file for each activity, add both to the combiner, click Combine Strava Activities, download the merged file, upload it to Strava and delete the two originals.
FIT, GPX and TCX. If every file is the same type, the output keeps that type. Mixed types are combined and exported as GPX for maximum compatibility.
No. Every GPS point, heart rate reading and cadence value from both files is kept and ordered by timestamp, so your map and graphs stay intact.
It stays as a real pause. Total span runs from the start of the first part to the end of the last, while moving time counts only the minutes you were actually recording.
Yes, according to the Strava Help Center. Upload the combined activity first and check it before you delete anything, so you never lose the workout itself.
Yes. Any device that produces FIT, GPX or TCX files works, and you can combine files recorded on different devices. Garmin Connect users export the original FIT files first.
No. The combiner runs in your browser and your files never leave your device. There is no upload endpoint in the tool.