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long activities (>100mi bike rides) not syncing

Former Member
Former Member
Hi -

For the past ~1+ year long workouts on my 910XT would not sync to the computer / website. Has anyone else experienced this? Solutions?

More details -

* the workouts that do not sync are all >100 mile bike rides. I don't think 100 is the hard-cut off

* shorter rides (up to 90+ miles but less than 100) have transferred OK - so obviously the technical setup is fine.

* this has been happening regardless of the computer (Macs), software that I have used. I have tried the latest versions of Garmin Express, Garmin ANT agent, Garmin Training Center, or Garmin Connect, on 3 different Mac computers. I am extremely computer savvy and this is not a user issue as far as I can tell.

* on the bike rides I have an ANT+ power meter that also records power and cadence data (in addition to the default data recorded by Garmin). No heart rate data.

* there are not many laps on these workouts - at most, 5-10 laps. Auto-lap is not on. Smart Recording is on.

* the rides have been recorded - I can see them on the watch with summary, averages / max, and lap data all with proper data numbers.

* I am Product Manager for internet software companies and a former engineer. I would love to help Garmin debug this, please contact me.

T.C.