The Garmin fēnix 7X Solar is the most durable premium ultra running watch on this page. This advanced outdoor GPS watch hits the mark on all the specifics you'll want on wrist.
The fēnix 7X Solar battery life is more than sufficient for ultra running and looks like this:
Smartwatch: Up to 28 days/37 days with solar
Battery Saver Watch Mode: Up to 90 days/1+ year with solar
GPS Only: Up to 89 hours/122 hours with solar
All Satellite Systems: Up to 63 hours/77 hours with solar
All Satellite Systems + Music: Up to 16 hours
Max Battery GPS: Up to 213 hours/578 hours with solar
Expedition GPS: Up to 62 days/ 139 days with solar
Full-color topo maps come preloaded on the fēnix 7X Sapphire Solar, and you can download them onto the fēnix 7X Solar. You'll also get ABC sensors—an altimeter for elevation data, a barometer to monitor weather, and a 3-axis electronic compass. Preloaded ski resort maps and over 42,000 golf courses worldwide come standard, plus a round-trip course creator, and Trendline™ popularity routing. Additionally, you get great navigation tools like Point-to-Point, real-time Bread Crumb Trail, Back to Start, TracBack®, Around Me Mode, Distance to Destination, Climbpro™ Ascent Planner, and it's compatible with BaseCamp™. Finally, you will have the best, most accurate GPS with Garmin's latest multi-frequency positioning.
Training & Performance
The fēnix 7X includes profiles for Running, Treadmill Running, Indoor Track Running, Trail Running, and Virtual Running. With a Garmin GPS, you get highly accurate wrist-based heart rate. You'll also get VO2 Max for your running profiles—including trail running—which tells you how you might expect to perform with heat or altitude factors. Use running Dynamics (with a compatible accessory) to measure crucial running metrics like cadence, stride length, ground contact time and balance, and more. Training Status lets you know if you’re training productively, peaking, or overreaching. Training Load compares your most recent stats to your optimal and historical fitness stats. Use PacePro™ pacing strategies and keep on pace with grade-adjusted guidance as you run a course.
These are just some of the training features and performance data you can expect out of this mega sport GPS watch.
Size & Durability
This Garmin watch features a huge 1.4” display, built-in LED flashlight, and Power Sapphire™ solar charging lens in Sapphire edition and Power Glass™ solar charging lens with Solar model. And it has the long-lasting battery life of the fēnix 7 series.
And now you can choose the new touchscreen interface to conveniently access selections or use traditional, reliable button controls when weather or trail conditions or sweaty hands make them more preferable.
One issue that some runners may have is the weight and size of the fēnix 7X. More rugged materials give it a bigger size and bulkier shape it may be too bulky that may be too much on the wrist of some ultra runners. However, the Garmin fēnix 7 series offers a range of sizes including the 7 and 7S, which have all the same features, with only slightly less battery life.