Suunto 9 Baro vs Suunto 7: Field test

The Resilient Runner
5 min readDec 29, 2020

Past Dec. 27th I had my weekly trailrunning session. This time I wanted to test my lovely S9B vs the newest Suunto 7. Both running the latest firmware version.

The setup and session details was as follow:

Suunto 9: Maximun precission+ Polar OH1 + Stryd

Wikiloc | Quantified

Suunto 7: 10 second precission + wrist HR (textile strap in correct position and tight)

Wikiloc | Quantified

As you can see, Suunto 7 10" precission is awesome compared to Suunto 9. Both watches beeps every km and between one and other it only took about 15 seconds for the first 7km (high trees in this zone). Before this I could see a difference of about 250 meters between watches.

Altitude profile if almost the same. 1681 meters (s7) vs 1683 (s9b). At this point Suunto 7 showed 518 meters total ascent vs 512 meters for Suunto 9 Baro. Remember that Suunto 7 in this setup only recorded a point every 10 seconds and S9b is using a high precission podometer (Stryd). FusedAlti and FusedSpeed algorithms are pretty awesome and works like magic.

The highest point of the route was La Najarra (Madrid, Spain). The official height is 2120 meters over the sea level.

Both watches were so accurate and showed almost the same altitude.

Speaking about distance, less than 200 meters between them and only 10 meters of total ascent.

There is no doubt that following a track in a Suunto 7 is better than in a Suunto 9 ;-)

I wish to have arrow direction in Suunto 7. Maybe in a future? ;-)

And what about battery? Suunto 7 started activity with 97% battery and Suunto 9 with 99%. I turned airplane mode in Suunto 7 to save battery because I didn’t need smartwach capabilities.

During the activity I checked for fun Suunto 7 maps a lot of times. The rest of the time I used battery saver screen which is gorgeous

Battery saver screen while running
From 97% to 62%
From 99% to 83%

At the end of the activity I had a big surprise becase both watches record the same distance and only 80 meters of total ascent

Now, lets take a closer look to gps data point recorded. You can check it out and download here (MyGPSFiles) and here (Quantified)

Altitude profile. S9 in orange and S7 in blue

I was running in a forest with high trees until km 7 aprox where the “hard” ascent start. At this point I had visible sky with some clouds. It was a windy and cold day. The profile is the same but I think that the difference is due 10" recording in S7.

S9 in orange. S7 in blue
S9 in orange. S7 in blue
S9 in orange. S7 in blue
S9 in orange. S7 in blue

The biggest problem for me is the oHR in Suunto 7. Some days is good some days is way off. At the moment it is not possible to link an external bluetooth HR sensor.

S9 in red. S7 in pink

So my final thoughts are that running with Suunto 7 is a pleasure. Screen visibility is incredible and map navigation is awesome.

With these numbers I am confident about to only carry my Suunto 7 to the trailrunning sessions and maybe some ultra races. I hope Suunto to get more and more developers to push Wear OS Suunto App in a higher level. They have a winner horse, just need to put money here ;-)

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