In the image above, you can see that I checked the 'Check to Edit' box. After you check that box, you will be able to edit the time stamp boxes that are grayed out by default. To do this, Check the box in the 'Start / End Time' column that says 'Check to Edit'. Right now, you can only trim by timestamp. This is where the trim / crop comes into play. Also, sometimes when you are merging files for Strava, you want to only merge part of a file. Strava now has their own trim/crop feature - but you can trim your files prior to uploading them. That is because position can be slightly different between the two GPS units - and if you select both positions in overlapping files, you can potentially accumulate a lot of extra distance due to the small variations in GPS points between the two devices. Note that I didn't select position data from both files. The tool will interweave the heart rate, cadence, and distance with the position and elevation data. and 'Position, and Elevation' from the second file. In this example, notice how I checked 'Heart Rate, Cadence, and Distance' from the first file. You should get an page that looks something like the image below (note how the red/orange lines are overlapping in this image as opposed to being end-to-end in the previous image): Just upload the two (or more) files to the tool on the main Combine GPS Files for Strava page. You can interlace Heart Rate, cadence, power, and/or temperature data from one device with the GPS tracks from another device. You would like to have your heart rate data on Strava along with your map. Let's say you already have a heart rate monitor, and you record your GPS track on your phone. How to interlace Heart Rate and/or power data with position dataĪnother common use for the tool is to merge Heart Rate data from one device with the Position Data from a GPS. In this case, you will want to select all of the 'Streams' (notice the checkboxes next to Position, Elevation, and Heart Rate in the table below? Once you send the combined file to Strava, your ride will be full-length!

In the image above, the horizonal red and orange bars represent the duration / time of your loaded GPS files. Once you do, you should see a page similar to the one below: You can also ZIP any of these three file types for faster uploading. The tool can accept any compination of GPX, TCX, or FIT files.

Simply go to the main Combine GPS Files for Strava page and upload your files. Rather than upload two short tracks, you can get credit for the full century (or longer!) ride that you did. You then start your phone GPS and start recording your Strava activity once again. What happens is you are riding along, and your GPS dies. The most common use for this tool is to concatenate two tracks end-to-end after your GPS dies.

Convert fit files to tcx