Verdict
Head-to-head · Best Gps Running Watches

Apple Watch Ultra 3 vs Garmin Instinct 3 Solar

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

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The short answer

Apple Watch Ultra 3 comes out ahead by a clear margin (4.4 vs 4.0). Apple Watch Ultra 3 is best for: Outdoor enthusiasts who prioritize safety and satellite connectivity over specialized sports analytics. Read the strengths below before deciding.

Apple Watch Ultra 3
Higher ratedRanked #4 in Best Gps Running Watches
Apple Watch Ultra 3
3 sources$649as of Oct 16

The Apple Watch Ultra 3 introduces two-way satellite communications, a first for the line that Dcrainmaker found works seamlessly in remote conditions to enable emergency SOS and text messaging. The LTPO3 OLED display delivers up to 3000 nits of brightness and a faster 1Hz always-on refresh rate, with OutdoorGearLab measuring peak luminance at the stated maximum. Battery life routinely exceeds Apple’s 42-hour claim, reaching 55-62 hours in daily use according to Birchtree.me, while charging to 80% takes approximately 45 minutes. However, the titanium case remains bulky at 12mm thick and 61.8g, making it cumbersome for sleep tracking or formal wear as noted by Ablogtowatch. Native workout tracking lacks map screens during activities, forcing users to rely on third-party apps like WorkOutDoors for route navigation, a limitation highlighted by Trail & Kale. This device fits outdoor enthusiasts who prioritize safety and battery endurance over specialized sports analytics, while serious athletes seeking detailed training metrics should look elsewhere.

Strengths
  • — Satellite connectivity enables SOS emergency calls and two-way text messaging when off-grid.
  • — LTPO3 display offers wider viewing angles, up to 3000 nits brightness, and a 1-second always-on refresh rate for ticking seconds.
  • — Charging speed improved from 60 minutes to roughly 45 minutes for an 80% charge.
Watch-outs
  • — The titanium case measures 12mm thick and weighs 61.8g, making it bulky compared to standard smartwatches.
  • — Native workout tracking lacks map screens during activities, requiring third-party apps like WorkOutDoors for route navigation.
Garmin Instinct 3 Solar
Ranked #6 in Best Gps Running Watches
Garmin Instinct 3 Solar
1 source$349.99as of Oct 11

The Garmin Instinct 3 Solar delivers exceptional battery endurance through solar charging that Thetrek describes as a game changer for backcountry explorers, extending GPS-only runtime to up to 130 hours. Dcrainmaker notes the device retains its rugged MIL-STD-810 construction and adds a practical LED flashlight with red-light mode, while multi-band GPS ensures reliable tracking in dense terrain. However, Garminrumors highlights significant quality control issues including misaligned mini-windows and inconsistent button feedback, alongside insufficient internal storage that blocks standard desktop updates. The monochrome MIP display sacrifices color for power efficiency, which Livefortheoutdoors finds underwhelming compared to AMOLED alternatives but necessary for maximum battery life. This watch fits hikers and trail runners prioritizing endurance and durability over visual flair or software convenience.

Strengths
  • — Solar charging capability extends battery life significantly in smartwatch mode and GPS modes, with claims of unlimited runtime under sufficient sunlight exposure.
  • — Built-in LED flashlight features variable intensities including a red-light mode to preserve night vision.
  • — Multi-band GPS with SatIQ technology dynamically optimizes satellite signal usage for improved accuracy and battery efficiency.
Watch-outs
  • — Monochrome MIP display lacks color and touch functionality, which some reviewers find visually underwhelming compared to AMOLED alternatives.

How they stack up

Apple Watch Ultra 3

The Apple Watch Ultra 3 lists 14 hours of GPS battery life, under the 20 hours of the Garmin Forerunner 55, the 41 hours of the Coros Pace 4 and the 120 hours of the Garmin Enduro 3. Its 49mm titanium case weighs 61.8g, close to the 63 g Garmin Enduro 3 and nearly double the 32g Coros Pace 4.

Garmin Instinct 3 Solar

The Garmin Instinct 3 Solar lists up to 40 hours of GPS use and up to 28 days as a smartwatch, against 21 hours and 15 days for the Garmin Forerunner 970. It shares a 10 ATM water rating with the Garmin Fenix 8 Pro and Garmin Enduro 3 and, at 53g, is lighter than either. Its 0.9-inch screen is smaller than the 1.4-inch AMOLED panels on the Forerunner 970 and Fenix 8 Pro.

Specs side-by-side

SpecApple Watch Ultra 3Garmin Instinct 3 Solar
Display SizeLTPO3 OLED (1.92in)0.9 inch (45mm)
Display TypeAlways-on LTPO3 OLEDPower Glass
GPS Battery Life14 hoursUp to 40 hours
Water ResistanceWR100 / EN1331910 ATM
Case Size49mm45mm
Case Materialtitaniummetal-reinforced bezel
Weight61.8g53g
Battery LifeUp to 42 hours of normal useUp to 28 days
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