Log workout in Fitbit, Strava or both?

[Ivar]

I’ve been using the search and Google, but I can’t find a good answer. I’ve been using Fitbit for a while now and I always logged my runs in Endomondo. However, I just found out that Strava has a tie in with Fitbit. Nice!
Now for the question;
When I go for a run, do I need to start the activity tracker on my fitbit, in strava or both?
I want my fitbit steps and HR to be complete, but I also want the GPS, distance and HR to be correct on strava. So how do I setup my log when I go running so all data is correct and no double entries are made?

Btw, I'm using a Charge 2

[RobertoME]

Hello @Ivar, it's nice to have new faces in the Fitbit Community. 

Note that  all exercises with GPS data recorded with Fitbit will be sent to Strava. Heart rate data will be included as well when it's available

Now, Exercises recorded with Fitbit's app or devices that do not include GPS data are not currently sent to Strava. In the other hand all your exercises recorded with Strava will be synced to Fitbit, but as manually logged activities, keep in mind they will not include GPS or heart rate data from Strava.

Fore more details please take a look at this post: Third Party Apps - Informational Post.

Stay tuned to the Fitbit Community and let me know if you have more questions.