Suunto has officially released its Q4 2025 firmware update (v2.50.26), bringing a massive suite of performance enhancements and functional upgrades to its flagship lineup. This rollout covers the Suunto 9 Peak Pro, the Race, Race 2, and Race S series, and both generations of the Suunto Vertical.
From proprietary heart rate logic to sophisticated multisport transitions, here is a detailed breakdown of what this update brings to your wrist.
Evolution of the Suunto Ecosystem: SuuntoPlus and Navigation
The latest software significantly boosts the multitasking capabilities of Suunto’s premium hardware. For users of the Suunto Race 2 and Vertical 2, the watch can now run up to three SuuntoPlus apps simultaneously during a single session, allowing for a much richer data overlay.
Navigation has also received a visual overhaul. Map markers, including POIs and turn icons, are now larger and more legible at a glance. Additionally, a new North-up map orientation option has been added for those who prefer traditional cartography over track-up views. To ensure you’re prepared for the elements, the watch now automatically syncs weather data via Wi-Fi overnight.
Specialized Multisport and Racing Logic
Athletes focused on complex events will find the new automatic transition feature a game-changer for Triathlons and SwimRun events. The watch now intelligently detects when you move between legs, removing the need for manual button presses during high-stress races.
Furthermore, Suunto has introduced Circular Multisport, which supports full block repetition—perfect for repetitive training circuits. New sport modes for Duathlon, SwimRun, and Aquathlon have been added to the native menu to support these disciplines specifically.
Next-Generation Data: NGP and Peak Metrics
The update introduces several high-level data fields designed for trail runners and cyclists. Normalized Graded Pace (NGP) is now available as an instant, average, or lap-based metric, helping runners gauge their effort on undulating terrain.
For power users, Suunto has added Peak Power and Peak Speed tracking across four specific durations: 3 seconds, 1 minute, 3 minutes, and 5 minutes. This allows for precise post-workout analysis of maximum efforts and sprint capacity.
ZoneSense and Advanced Personalization
Suunto’s ZoneSense technology is becoming more integrated into the daily user experience. Post-activity summaries now include a dedicated time-in-zone breakdown directly on the watch face. Furthermore, the ZoneSense intensity ring is no longer limited to running; it is now accessible across all cardiovascular profiles, including gym sessions, hiking, and mountaineering.
Efficiency is also improved through persistent sport mode configurations. Settings like intensity zones, map colors, and autolap triggers are now saved individually for every sport, ensuring your watch is always “ready to go” without manual re-adjustments.
Proprietary Heart Rate Algorithms and Sensor Control
A major milestone in this update is the debut of Suunto’s in-house optical heart rate (OHR) algorithm for the Suunto Race and Race S. This move toward proprietary technology aims to fix early-activity spikes and improve stability during technical trail descents.
The Race 2 and Vertical 2 also receive an improved OHR algorithm, specifically optimized for high-intensity interval training (HIIT) and rugged terrain where wrist movement typically interferes with accuracy. Complementing this is a new advanced sensor management system, allowing users to toggle specific sensors (like using only a Stryd power meter) on a per-sport basis.
Refined Altimeter and Swimming Accuracy
The new “SMART” barometric algorithm provides much tighter vertical tracking. By reducing the initial recording threshold from 3 meters to 2 meters, the watch can now capture meter-by-meter elevation changes with greater precision. New filters also help the device distinguish between actual climbing and environmental factors like wind or humidity.
Swimmers will notice a snappier experience as well. The internal logic has been recalibrated for faster stroke and rest detection, ensuring that intervals are recorded accurately even during complex pool sets.
Hardware-Specific Fixes and UI Polishing
The Suunto Vertical 2 gains several exclusive quality-of-life features, including a flashlight that remembers its last setting and a quick “touch gesture” for powering off the device. Across all models, the user interface feels more fluid thanks to optimized menu transitions and faster map rendering.
Finally, version 2.50.26 addresses several lingering bugs:
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Sleep Tracking: Fixes an issue where overnight sleep was incorrectly categorized as a nap.
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Connectivity: Restores full functionality to Airplane Mode within the control panel.
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Health Sensors: Resolves inconsistencies in blood oxygen (SpO2) measurements.
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