Running with tracker and using strava

[gtorian]

If i am using a app like Strava for tracking my runs, i have it linked with my fitbit account, while I wear my Flex2 will it double my steps?  Should I use only one item, or will the fitbit app use Strava to override?

[SilviaFitbit]

It's great to have you here @gtorian! Activities from Strava are synced over to Fitbit as manually logged activities but will not include GPS or heart rate data from Strava. Instead only GPS recorded activities from Fitbit will sync to Strava. 

So, it's better if you use one tracker at a time or just track the activities that has GPS with Fitbit as it will sync to Strava. You can learn more about this integration by checking this third-party post. 

Hope this clarifies any doubt.