Garmin 235 missing distance

Running Shoes/Running Gear Other

5 years ago 01/14/2019 12:15pm EST

I did a run yesterday and used manual splits on known 1 mile segments of the trail. I always use manual splits on these same segments for speedwork since i find garmin tends to slightly underestimate distance on straight segments. I've also been using these same segments since before garmin.

I downloaded the run and noticed one of the miles was marked at 0.95 and the other at .83. The profile shows missing data points. This is the first time this has happened.

Has anyone had this happen and if so, were you able to correct it? I've got a really expensive stopwatch if i can't fix this.

thanks

5 years ago 01/14/2019 12:35pm EST

re: moanswers

I know Garmin consistently lowballs my distance when on the trails. It can't capture all the switchbacks, and sharp turns well enough.

Run Faster.

5 years ago 01/14/2019 1:03pm EST

re: Ultra or Die

That makes sense. But in this case, it is a measured 1 mile segment that is pretty straight and it's always measured 1.00-1.02 miles in the past.

Something is broken.

5 years ago 01/14/2019 4:50pm EST

re: moanswers

If it's recently, it might be because of the government shutdown. The folks that control GPS systems in the sky are DoD, NASA, and NOAA. So who knows...

I wouldn't rule out your watch is broke.

5 years ago 01/14/2019 5:52pm EST

re: manualf150

I have noticed a few garmin 230 glitches recently. My watch had been performing flawlessly up until a couple weeks ago. Ran through a mile split and it recorded accurately but only a few meters more and it recorded another mile split without me touching the watch.

Also downloading data to the iPhone app shows huge discrepancies. The app doesn’t record all of the mileage. There are gaps and missed runs but it displays on the watch itself.

Might need a new software update

5 years ago 01/14/2019 8:11pm EST

re: manualf150

Not sure that makes sense. We are fully funded for the year.

5 years ago 01/14/2019 8:47pm EST

re: Glitchesss

Glitchesss wrote:
I have noticed a few garmin 230 glitches recently. My watch had been performing flawlessly up until a couple weeks ago. Ran through a mile split and it recorded accurately but only a few meters more and it recorded another mile split without me touching the watch.
Also downloading data to the iPhone app shows huge discrepancies. The app doesn’t record all of the mileage. There are gaps and missed runs but it displays on the watch itself.
Might need a new software update

Try updating the software. Also, delete all the history on the watch as well to see if that helps. Maybe also try using GPS+Glonass, although that hasn't seemed to make mine any more accurate.

Did it lose accuracy after you turned around? Or was it a continuous run in the same direction? Mine has given me trouble after turnarounds, especially where there is tree cover.

If all else fails, call their tech support. They can study the files that are uploaded to Garmin connect and troubleshoot.

5 years ago 01/15/2019 6:03pm EST

re: Garmin 235 user too

Garmin 235 user too wrote:
Glitchesss wrote:
I have noticed a few garmin 230 glitches recently. My watch had been performing flawlessly up until a couple weeks ago. Ran through a mile split and it recorded accurately but only a few meters more and it recorded another mile split without me touching the watch.
Also downloading data to the iPhone app shows huge discrepancies. The app doesn’t record all of the mileage. There are gaps and missed runs but it displays on the watch itself.
Might need a new software update
+1
Try updating the software. Also, delete all the history on the watch as well to see if that helps. Maybe also try using GPS+Glonass, although that hasn't seemed to make mine any more accurate.
Did it lose accuracy after you turned around? Or was it a continuous run in the same direction? Mine has given me trouble after turnarounds, especially where there is tree cover.
If all else fails, call their tech support. They can study the files that are uploaded to Garmin connect and troubleshoot.

Yes on the turn around. This is exactly when it started. i was doing an out and back 4m tempo. i pushed manual when i got to my starting mile marker, went out 2 miles then turned around. the first 2 miles were spot on but final 2 miles were completely off. i've used that same course dozens of times with this garmin and this has never happened. i'll look into the software upgrade.

thanks!

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