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The Garmin Instinct Solar is a super-tough running watch that has incredible battery life thanks to its photovoltaic glass lens, which keeps it topped up so you can go weeks between charges. This is one of the best running watches around, and will serve road runners well. In our tests, our only complaint was that the screen was a little dim and could be tricky to read in daylight without a tap of the backlight button, which puts a small dent in its otherwise impressive battery life, but that's a small gripe. If you do happen to stray off the radar (in a tunnel, for example) the watch automatically calculates your cadence and stride length so you can keep monitoring your progress. Positioning is excellent, with GPS supplemented by GLONASS and Beidu positioning (GALILEO support is coming in a future update). At just 29g, it's barely noticeable on the wrist, but includes several features we'd expect to find in more expensive running watches, including an 'AI trainer' to help you manage your training load in preparation for events interval, triathlon, and multi-sport modes and compatibility with third-party sensors like chest-strap heart rate monitors and foot pods. The Coros Pace 2 is a superb mid-range running watch that's super lightweight, but heavy on features.
