Device accuracy 🤔??

[Woollyweaver]

Does anyone else track their runs with more than one device and find that there can be a wide disparity in distance recorded?

This morning I set off on the NRC HM plan 8km run, but my Garmin reckons that I ran 9.1km. Not such an issue at the moment, but that 13% difference will start to look (and feel) quite huge as the distances increase. That's an extra 3km on top of the HM distance 🥵😲!

Any thoughts?

On the plus side, it was a lovely blustery canal-side run, just me and the 🦆🦆🦆🦆. I'm enjoying how the NRC plan is helping me to gain more of an understanding about pace - it definitely makes for a more enjoyable (manageable) run. I seem to be getting faster too (when I least intend it!): another 5km PB today at 24 minutes, with 50 minutes overall. Think I may need to change my profile name - I sometimes don't recognise myself 🏃🏼‍♀️🤸🏼‍♀️😆

[Hidden]

That is some speed you are going. Blimey 🚀

I had an issue on Monday with oddball distances on my 10km run. Mrs RfJ had fiddled with the settings on my Android phone and as a result Coach B on my guided run had me finishing about 3 km early.

Fortunately I know where the key distance points are on my routes and so just checked in with Garmin to confirm where abouts I was distance wise.

By putting my phone into some kind of optimise battery mode obviously interfered with its GPS tracking accuracy.

Never had an issue with Garmin GPS 👍

Glad you had another good run.

[Cmoi Graduate10]

My Garmin and Strava distances and elevation gain almost never match when measured separately. Garmin tends to be less generous, but not always. I've also noticed that when Garmin uploads to Strava, the figure given on Connect is modified when it appears on Strava.

5km in 24 minutes is one hell of a pace, well done!

[Hidden]

In general Garmin is more to be trusted than the GPS of your phone...

[nowster Graduate10]

My local parkrun course has many 90° turns in it (about 15) and plenty of tree cover, multiplied by it being four laps. This really confuses the Garmin watch, which consistently under-reads by 10%, but not my phone.

On straighter courses (with fewer trees) the watch is accurate.