COROS has finished the staged rollout of its Spring 2026 software update, putting three headline features — Pace Strategy, Hill Alerts and Hybrid Fitness — in front of every customer running a watch released since 2022. Version 3.1508.0 was first pushed at the end of March and has now reached the rest of the field after the usual two-week phased deployment, with the tail-end APEX 2 Pro and PACE 2 owners receiving prompts to download the build over the past week.
The headline addition is Pace Strategy, COROS's first attempt at a meaningful answer to Garmin's PacePro. Plug a goal time into the planner inside the COROS phone app and it carves the route into segments based on gradient, applies a course-specific banking model to push you faster on the descents and easier on the climbs, and ships the resulting pace plan to the watch. On race day, a dedicated data screen renders the segment target, the running average against plan and the rolling estimated finish time, with vibration alerts when you drift more than five seconds per kilometre off pace. The implementation is more aggressive than Garmin's on big-elevation routes, and trail runners testing it ahead of Western States and UTMB will determine whether it can be trusted on terrain that defeats most pacing engines.
Hill Alerts complements the new pacing model and answers a long-standing complaint about COROS's route-following experience. When you're following a downloaded course in Run or Trail Run mode, the watch now previews each upcoming climb or descent with a banner showing distance to the start of the feature, total elevation gain or loss, average gradient and the longest sustained pitch within it. Mid-climb you get a remaining-elevation count rather than a remaining-distance count, which neatly reframes the effort for anyone running a hilly course for the first time. Hybrid Fitness, the third headline feature, lets the watch capture cardio and strength elements of a single session without the user having to manually switch sport profiles — useful for hyrox-style training and for the growing cohort of runners cross-training off injury.
The update also folds in a long list of smaller refinements. Weekly distance is finally a first-class metric available directly on the watch face, a passcode protects the device when it leaves your wrist, and ClimbPro-style breadcrumbs now sit alongside the existing topo background. EvoLab, COROS's training-load analytics platform, gains a Race Pace Strategy export so coaches can pull a runner's planned and executed segments side-by-side, and the company has improved how its watches handle indoor running cadence by rejecting outliers from the wrist-based pedometer when it detects a treadmill belt.
The strategic implication is harder to ignore than the feature list. By widening the entitlement window all the way back to APEX 2 and the original VERTIX 2 hardware, COROS has signalled that its software roadmap will continue to be carried by the same chassis for at least one more product cycle — a sharp contrast with Garmin, where high-end features still tend to be ringfenced behind newer Forerunner releases. Coupled with the PACE 4 review cycle that wrapped earlier this month and an upcoming NOMAD update, the Spring 2026 release puts the company on its strongest positioning of the watch year heading into peak marathon training season.