New online workout editor


Jesper lives in Vejle, Denmark and has been zwifting since 2015. He rides with World Social Riders whenever possible. Zwift name: Jesper Rosenlund Nielsen [ZwiftHacks]

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13 Responses

  1. JD Vivian says:

    Hey Jesper. I think something changed since a previous version of Zwift. When I recently used this tool, the file gave me very long workouts in Zwift. I think it’s now looking for total seconds for each segment, vs a format of hh:mm:ss, which comes out as a 4 or 6 digit number in your file with no separator. It’s taking that as seconds. So in your example above, it’s reading the 1 minute 47 seconds, output as 6047 as over 100 minutes. Perhaps their recent upgraded changed the formatting there? Thanks for all the work you do here!

  2. Robert Maris says:

    Hello , thanks very much for the tool. Is it possible to choose power zone targets rather than a specific number?

    • jesper says:

      It wasn’t, but based on your comment I just made it possible to input percentage of ftp (e.g. 80 % or 80%) instead of absolute power.

      Take a look at example 1 in the tool to see the accepted format.

      I hope you like it 🙂

    • jesper says:

      I made it possible to enter a zone number from 1 to 6, too. The format must be like z1, Z3, or simply 6. In general, if the ‘power’ number is less than or equal to 6, it will be interpreted as a zone. See example 2 in the tool.

      The zones are the same as Zwift uses.

      • Robert Maris says:

        What thoroughly efficient service! Thank you very much!

      • Tom says:

        Super tool!
        Do you know if it’s possible to use the zone as a whole?
        In the current tool, even when using Z1 etc., the code is created with one single %FTP value, which means the workout will go to this specific target.

        What I’m looking for is a way to define the upper and lower boundary of the zone, zo you can have a ‘free’ride within that zone. The trainer would only start to compensate once you leave the zone.

        Don’t know if this is too ambitious or even possible, but it’s worth a try.

        • jesper says:

          No, I don’t think you can do that with Zwift workouts. I would assume that the trainers could vary in how responsive their ERG mode is to changes in power input but it will still be a very narrow band you have to stay within.

  3. Dave says:

    Good work, I assume this doesn’t work with the Apple TV version though? Doesn’t seem to be any way of transferring files to/from the Apple TV?

    • jesper says:

      You are right. For now the only way to transfer custom workouts to Zwift on Apple TV is to link Zwift with a TrainingPeaks account and create the workout in TrainingPeaks.

  4. Mike says:

    Does this support warmups and cooldowns? Or do I just add those after the fact?

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