Why Does AI FTP Prediction Drop After Outdoor Workouts?

Has anyone else noticed that outdoor workouts seem to reduce TrainerRoad’s AI FTP Prediction?
Ramp Test FTP: 283 W (I’m a punchy rider, so it’s not accurate)
FTP Detection: 268 W

Here’s what’s happening to me:

  • I complete my scheduled workouts indoors without any issues.

  • Recently I did an outdoor VO₂max workout, and it actually felt great compared to my threshold workouts, and marked as hard.

  • After syncing the outdoor ride, AI FTP Prediction lowered my FTP from 278 W to 272 W.

  • As a result, all of my upcoming workouts changed to easier ones.

The strange part is that if I manually switch back to the originally scheduled workouts, My FTP prediction drops to 258 W.

For context, during a recent group ride, I averaged 267 W for 45 minutes, and it didn’t feel like an all-out effort. So an FTP of 258 W doesn’t seem to reflect my current fitness.

Is there something about how TrainerRoad analyzes outdoor workouts that could cause this? Has anyone experienced AI FTP Detection lowering their FTP after outdoor VO₂max workouts, even when the workout felt great?

It’s not an ego thing, I just want a somewhat accurate number.

username: pkushnir

This is a know. Issue that TR is attempting to address. Please add your case using the form in the post pinned at the top, and search the forum for the latest info (there are a couple of different threads).

Yeah, I did, but is there any workaround?

If you find that your workouts become too easy, you could manually set your FTP or use Workout Alternates to find harder workouts.

This is the company’s #1 priority right now, and we’re working hard on a fix.

Hang in there and let me know if there’s anything I can do to help out.

Welcome to the forum! :partying_face: