I simultaneously track my runs on my Blaze and the Strava app, because the latter gives more detailed info. However, I've noticed that there is a significant discrepancy in the distance measured every time. This strikes me as odd because both trackers use the same GPS on my phone.
I create my running routes on the Strava app to fit a specific distance I want to run (so I have 5k, 10k, 20k routes etc. ready-made). I look at the maps in quite a lot of detail and think the distances on the Strava map are accurate. However, my Blaze always gives a much lower distance, which is getting a bit annoying. For example, this morning I did a 5.2km route, which I had created online looking at the map. The Strava app gave me exactly this distance. Meanwhile, my Fitbit app says I only ran 3.9km (!), much lower. When I look at the map automatically created in the Fitbit app, the route looks exactly the same, but somehow a whole kilometre has been lost somewhere. My running pace is also registered as much slower.
Can anyone explain why this discrepancy occurs and if there is anything I could do to fix it? I don't know which app is more accurate, but I feel like the Strava routes should be, because I have created them while measuring distances on a map.
Moderator edit: Updated subject for clarity
