Editor’s note (Dec 26, 2022): the method described in this post no longer works. Our hunch is that Zwift is now storing your power PBs on their servers, so deleting them from your device has no effect.
Your personal best power numbers for 5 seconds, 1 minute, 5 minutes, and 20 minutes are stored in Zwift and can be viewed from the menu screen while in game. Occasionally, riders want to reset these numbers for any number of reasons:
- A temporary calibration problem which bumps their power up incorrectly
- A new smart trainer or power meter which reads lower/more accurately than a previous setup
- A friend who “borrows” their Zwift account and puts out higher power numbers
- Recovering from injury and wanting to show current power levels instead of old PBs
Whatever your reason, we’re here to help. Here’s a quick video explaining how to reset the personal best power numbers in Zwift: