Speed / Distance unusually low and inconsistent on Indoor Rides (Workouts)

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Sven Ellingen

• January 05, 2025 14:55

When using the Karoo for indoor workouts, I've noticed very inconsistent speed and distance information being record and subsequently being sent to Strava.

See the attached image for an example of an ERG mode workout. As you can see, the speed constantly changes whereas the power output is the same. 

I would like to understand why this is happening and if there is any way or setting that I might not be aware of to fix this. 

While this might not seem like a huge issue, I’d still like the distance to be a little bit more reflective of the distance I would be tracking when performing the workout outdoors or on other apps. Currently, indoor workouts performed on the Karoo are recorded about 10-15km/h slower. 

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  Cristiano Cunha

  • January 16, 2025 07:37

  Hello,

  Without knowing your setup (trainer model, sensors used, etc.), it’s difficult to pinpoint the cause of the issue. However, since it’s an ERG workout, where the trainer controls the number of watts you should be generating during each part of the workout, it’s important to understand that speed and cadence can be adjusted by you—either pedaling faster (with the feeling that it’s easier) or slower (with the feeling that it’s harder), while the power will remain the same.

  In your graph, I believe the variations in speed are due to small (normal) fluctuations in your cadence.

  My suggestion is that when doing an indoor workout based on power, don’t worry about the displayed speed, as it’s not comparable to an outdoor workout, and the goal of this type of workout is based on power and cadence.

  Sorry if I wasn’t very clear, but it’s complicated to explain.

  Best regards,

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  Sven Ellingen

  • January 16, 2025 09:48
  • Edited

  Thanks but that’s not the case. The cadence is consistent. I’ve been riding indoors for many years using different apps, out of all training apps and head units (coming from Wahoo), the Hammerhead is the only one that shows this behaviour.

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  Bhagyashree

  • January 20, 2025 11:22

  Hi Sven, We hope you have received our recent response to your ticket regarding this issue, and we shared some workarounds that should help. Could you please let us know if those workarounds helped or if you’re still experiencing problems? If you still have concerns, feel free to open a new ticket, and we’ll gladly assist further.

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