Garmin Instinct 3 vs. Samsung Galaxy Watch Ultra 2: A Comprehensive 11-Mile Cycling Showdown

The Quest for the Ultimate Cycling Tracker

Selecting the right rugged smartwatch for outdoor performance is a challenge for any athlete. To determine which device offers superior data reliability for cyclists, I put the Garmin Instinct 3 and the Samsung Galaxy Watch Ultra 2 through a rigorous 11-mile testing route across the diverse landscapes of Seattle, Washington. This test followed a previous, decisive victory for Garmin during an e-mountain biking excursion in the Northern Cascades, leading me to investigate how these top-tier wearables perform in a more urban environment.

The Testing Methodology

To ensure accuracy, I wore the Samsung Galaxy Watch Ultra 2 on my left wrist and the Garmin Instinct 3 on my right. My one-hour route encompassed a variety of terrains, including busy residential neighborhoods, scenic waterfront paths, and densely wooded areas. To establish a baseline, I also recorded the ride using the Strava app on an iPhone 16 Plus mounted to my handlebars.

Performance Metrics Breakdown

The results provided a clear picture of how each device handles critical fitness data:

• Distance: Both watches proved highly accurate. The Instinct 3 recorded 10.78 miles, while the Galaxy Watch Ultra 2 logged 10.88 miles, closely tracking the Strava control at 10.93 miles.
• Climbing Accuracy: This remains a point of contention. The Samsung Galaxy Watch Ultra 2 reported 970 feet of elevation gain, which significantly exceeded the 761 feet recorded by the Garmin and the 675 feet registered by Strava. This recurring inflation suggests a software calibration issue specific to Samsung's elevation tracking.
• Heart Rate and Speed: Data for average heart rate (159 bpm) and max heart rate (175 bpm) were identical across both devices, indicating highly reliable biometric sensors in both units. Speed tracking was also consistent, with minor variations that are expected in GPS-based measurements.

The Verdict: Why Garmin Wins for Outdoors

While both the Garmin Instinct 3 and the Samsung Galaxy Watch Ultra 2 offer impressive features and modern sensor technology, the consistency of the data remains paramount. The Galaxy Watch Ultra 2, despite its sleek interface and advanced functionality, continues to display inflated elevation metrics that have now appeared across three separate outdoor tests. In contrast, the Garmin Instinct 3 provides more reliable, consistent reporting for climbing, making it the preferred choice for dedicated cyclists and outdoor enthusiasts who prioritize data accuracy above all else.

Ultimately, while Samsung is making strides, the specialized engineering found in the Garmin ecosystem makes the Instinct 3 a more trustworthy companion for long-term tracking of outdoor adventures.