I recently tested the Apple Watch Ultra 3, the Samsung Galaxy Watch Ultra 2, and the Garmin Instinct 3 on a demanding hike through North Cascade National Park to see which holds up best in the wild. Testing included a five-mile trek with significant elevation changes and a chilly alpine swim. The results provide a clear view of how these devices perform under pressure.

Accuracy was a major differentiator. The Garmin Instinct 3 tracked the hike with the most precise elevation data, aligning closely with established trail metrics. By contrast, the Samsung Galaxy Watch Ultra 2 produced significantly inaccurate elevation numbers during the trek. The Apple Watch Ultra 3 was consistent but slightly less precise than the Garmin.

Battery life remains a critical factor for outdoor gear. Over the three-hour test period, the Apple and Samsung watches both consumed 18% of their battery capacity. The Garmin Instinct 3 used only 6%, proving its superiority for longer adventures where charging is not an option.

Comfort and physical design were the final deciding factors. At 53.5 grams, the Garmin is lighter and less cumbersome than the competition. Its rounded, slim case design feels better on the wrist during long activities, while the larger, rectangular builds of the Apple and Samsung devices are less ergonomic for extended wear. The Garmin Instinct 3 stands out as the most reliable tool for serious hikers.