Fitbit Product Experts Alumni are retired members of the Fitbit Product Expert Program. Learn more
In Activity history in your Dashboard, you can only edit an activity if you see a pen next to it:
In my particular case, it was a walk that was autodetected by my Surge (forgot to log it as such). If there’s no pen for the activity you want to change, you can write down its details (steps etc.), delete it and re-log it manually with the correct category. I’m not sure I would bother doing that myself: even if you logged it as a run, your Fitbit most likely estimated calories based on the real intensity of the activity, not what you told it it was.
Best Answer