Garmin 745 – New TRACK Mode – Good but needs a bit of work

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Garmin Forerunner 745 Track Mode

If you are going to test a new Garmin track feature then it’s always best to do it in style. As you can see, I chose the Sir Mo Farah Athletics Track. Which just so happens to be my local one.

Q: Why bother with a track mode?

A: Many of us run track at some point and are happy with pacing to stopwatch-lap times but when you want to look at your post-race stats its nice to have a decent representation of where you’ve been running rather than a messy scrawl. As well as that a decent log of the actual distance you’ve run would be great. Normally your watch will record something like this, albeit not as fast.

OK, that graphic was the recent 5k world record at Monoco and the GPS track it shows would probably have been made worse by the old tech used (FR35) and the height and proximity of the stands. Most of our running oval GPS tracks are probably more open to the satellites in the sky but, even so, you may well regularly get something like this even when running only in Lane 1:

Background

Coros recently introduced a new outdoor ‘track’ mode which cleverly snaps your run into the lane you’ve specified. It had some good press.

Garmin has copied and slightly improved it in some ways with their Forerunner 745 Triathlon watch and the same outdoor track functionality will be rolled out to other high-end models soon in beta. I decided to try it out and here’s what I did and what I found.

What I did

I used 4 watches: Coros Pace 2, Garmin Forerunner 945, Garmin Forerunner 745, Polar Vantage V Titanium. The Garmins used GLONASS, the Coros used GPS-only and the Vantage used Galileo. I recorded 4 separate runs all starting at the beginning of the home straight.

  • Run 1 – 2 laps, Lane 2 @914m (Garmin calibration)
  • Run 2 – 2 laps, Lane 2 @814m
  • Run 3 – 2 laps, Lane 4 @844m
  • Run 4 – 2 laps, Lane 6 @878m

Perhaps, in reality, I ran, at most, 2-4 metres more each time.

The calibration protocol is specified in the paper manual and maybe also in the online Garmin 745 Manual. It seems that ‘a couple of laps’ (quote, ie 2) are needed to record the location of the track, its orientation and dimensions. This is undertaken in any lane you chose and the other lane distances are calculated. Presumably the next time you visit there is no need for an initial couple of laps calibration? Conversely, Coros needs a lap or less to calibrate but calibrates for every visit to the track. So my test favoured Garmin.

What I found

Let’s look at the 3 runs for each watch which should be 3 concentric ovals patterns.

Here’s the Vantage V…meh. I’ve seen worse.

Here’s the Garmin 945…less meh and you’d probably accept that.

 

Here’s the Coros Pace 2 (remember this test doesn’t favour Coros). Those are nice ovals but rotated slightly and moved to the right.

 

And here we have the 3 concentric(ish), calibrated ovals of the 745…nice. It’s clearly the best.

 

Ok, let’s slice and dice the data a different way and instead look at how each device performed on each 2 lap test with the data rounded to the nearest 10m

Lane 2 – actual 814m

Green 945, Red Pace 2, Yellow 745, Blue Vantage

Lane 4 – actual 844m

Green 945, Red Vantage, Yellow 745, Blue Pace 2

Lane 6 – actual 878m

Green 945, Red Vantage, Yellow 745, Blue Pace 2

 

New Connect Functionality

This then brought me back full circle to something that @JohnK alerted me to, which neither of us had seen until recently. Garmin Connect (mobile) now colours your running track based on pace, heart rate or elevation. This just seemed to tell me that I did 2 fast (red) laps…but they weren’t fast, although they were consistent and that’s maybe why Garmin shades them like this in this particular instance, John’s image shows up the colours a bit more nicely.

 

 

Take Out

The Garmin 745 performs quite well here with a nice track and I can only assume that when the same feature arrives on the FR945 and F6 then there should be a similar level of performance. I’m not quite sure why the distances weren’t spot-on as the lane lengths are known.

The test was unfair on the Coros Pace 2, which would perform better over a single long track session.

Garmin didn’t specify lane distance when the lane was chosen, which needs to be changed to how Coros do it.

Both the Coros Pace 2 and FR745 *DO* allow you to specify a lane change mid-workout but I didn’t test that.

One other downside with the Garmin 745 was that NO LAPS were automatically shown as I had the autolap set to the default of 1600m (and each mini-workout was half that)

 

Return to Garmin 745 Review

 

 

 

 

 

 

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EriK Hall

Distance Linked Track Mode + Lap Button I have not found detailed information on how the Coros or Garmin track modes operate, but I have a few ideas. First, your initial laps allow the system to “build” a track using standard track geometry. Second, the system utilizes your position in the world and a known database of tracks (which can improve over time). Third, the system uses satellite imagery to locate the track and translates your track to that imagery. A fourth option would be a combination of any or all of those above. In considering these options, it’s very important to note that all track are not of equal geometry and satellite imagery has flaws. Track geometry will effect the measurements that the GNSS makes and the system’s translation. This is why, as you correctly state, that the system must allow the runner to input the track distance (400m/440yd or some other variation). Also, since the imagery satellites do not take their pictures directly above tracks and utilize large aperture lenses, there will always be some parallax in the picture. Therefore, a perfectly represented run may not align with the track. The Coros example in your article looks like… Read more »

Ignacio

A bit unrelated, but is that track open to the public? I’ve recently moved nearby and thought it was closed to students only.

tfk, the5krunner

you can book it. i think it might have been closed a couple of weeks back.