Tag Archives: UltraTac

‘Garmin’ Support Provides Insights Into ‘UltraTrac’ GPS Mode.

by Anura Guruge


Click to ENLARGE and read. Received on my Twitter account.


They were responding to THIS post.

Click image to access post.


What it says about ‘UltraTrac’ in the
Fenix 5 Plus Owner’s Manual.

Click image to ENLARGE.


There is NO mention in the Owner’s Manual about pre-calibrating or that it is designed for longer than marathon distances.

I triple checked.

Plus, I have used GPS on this ‘course’ at least 100 times!

The problem, as I see it, is the same as that with open water swimming. The gyro dead reckoning is dead wrong.

Here is my response to Garmin.

Click to ENLARGE.


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by Anura Guruge

‘Garmin’ ‘UltraTrac’ GPS Distance Measurement Is A Cruel Joke.

by Anura Guruge


Click to ENLARGE and be shocked.


Click to access my 2018 post.


I am shocked and appalled! This is NOT RIGHT. UltraTrac can’t be this bad — but it is.

That 0.44 mile walk was from Wednesday, April 17, 2019 — my first day off crutches in 6-weeks after my knee surgery. My first walk in 6-weeks. As I am walking I realize that the GPS distance is off — way off. But, I persevered. Today, 2-days later I clocked the distance of just a part of that walk using my car. Just that section came to 0.4 miles and I didn’t even bother driving half of the ‘course’.

This is stupid. Same problem that Garmin has with open water swimming.

There really should not be an issue. It should be able to compute the distance between the GPS reading. It, with my Garmin Fenix 5 Plus, even has the gyroscope to tell it which way I was headed. Very disappointed.

Did a Google on ‘UltraTac’. This is a known and COMMON problem. I am amazed that Garmin hasn’t bothered to fix it.

So, heads-up. Do NOT, I repeat, DO NOT, use UltraTac. It is a joke.


Related Posts:
Search ‘Garmin‘.


by Anura Guruge