There were some minor improvements to the Suunto firmware last week (v2.6.54) covering all current devices in slightly different ways.
New Features:
- Fitness age, which shows your fitness level based on a target level for a specific age. (Suunto 3 Fitness)
- Direction indicator when navigating a route (Spartan, Suunto 9)
Here we can see the direction indicator on the Suunto9 to the left on the new firmware compared to the SPARTAN Sport on the right with the old firmware and following the same course. The course ahead is in dark blue and, on the left, has directional arrows on the course.
Enhancements and Fixes:
- You can now also follow pace zones without setting a target (all)
- You can now also follow power zones without setting a target (all except 3 Fitness)
- Improvements to FusedAlti (Spartan Ultra, Spartan WHR Baro, Suunto 9 BARO)
- Additional bug fixes and performance improvements (all)
Last Updated on 20 January 2026 by the5krunner
My favourite kit and nutrition
- Injinji – Runners protect your toes. Avoid discomfort and minor injury. Run more. Run faster. I use them.
- Garmin 90-degree charging adapter — A small keyring adapter you can use anywhere. Essential when away. I use one.
- Garmin charging puck — the fastest and most reliable way to top up your Garmin before a session. I use one.
- Ravemen FR300 — Front light that mounts directly under your Garmin or Wahoo head unit. Keeps your bars clean and your beam pointed where it matters. I use one.
- Body Glide – The blue anti-chafe stick that all swimmers and many runners use. I use it.
- Maurten — The race nutrition trusted by elite athletes. Gels and drink mixes engineered to be easy on the stomach. I use them.
- Garmin Varia RTL515 — A radar rear light that alerts you to vehicles approaching from behind. Pairs with your Edge or Wahoo. I use this model.
- Favero Assioma Pro RS2 — The power-meter pedals most serious cyclists choose. Accurate, easy to move between bikes. I use this model.
- Garmin Forerunner 970 — A serious choice for a pro-grade triathlon watch. I use this.
- Polar H10 — My daily driver for accurate, waking HRV readings.
- Wahoo ELEMNT Roam 3 — The bike computer that has the feature Garmin lacks: usability. I use mine on most rides.
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tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors. ID
“There were some minor improvements to the Suunto firmware last week (v2.5.54) …”
I think that should have been v 2.6.54? That’s what I got when I updated just now, anyway.
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