Verdict
Head-to-head · Best Gps Running Watches

Apple Watch Ultra 3 vs Garmin Fenix 8 Pro

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 Fenix 8 Pro
Ranked #7 in Best Gps Running Watches
Garmin Fenix 8 Pro
2 sources$1,199.99as of Oct 11

The Garmin Fenix 8 Pro delivers exceptional battery life in smartwatch mode, lasting up to 15 days on the 51mm model, and features a bright 454x44 pixel AMOLED display with sapphire crystal. Bettertrail found its titanium bezel and MIL-STD-810 durability justify the premium positioning for expedition-ready use, while Oracleoftime confirmed the sharp visuals enhance navigation during activities like backcountry skiing. However, the watch is extremely expensive, starting at $1200 for the 47mm version, and lacks a smaller case size option, making it bulky and heavy for everyday wear. Additionally, satellite connectivity features require an ongoing monthly subscription plan, which adds to the total cost of ownership compared to competitors offering free basic SOS services.

Strengths
  • — Exceptional battery life in smartwatch mode, lasting up to 15 days on the 51mm model.
  • — Bright and sharp 454x454 pixel AMOLED display with sapphire crystal lens.
  • — Premium expedition-ready build featuring a titanium bezel and MIL-STD-810 durability rating.
Watch-outs
  • — Extremely expensive, with the 47mm version starting at $1,200.
  • — Bulky and heavy for everyday wear, lacking a smaller case size option.
  • — Satellite connectivity features require an ongoing monthly subscription plan.

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 Fenix 8 Pro

The Garmin Fenix 8 Pro has a 1.4-inch AMOLED display like the Garmin Forerunner 970, with a 10 ATM water rating where the Forerunner 970 lists 5 ATM. Its GPS battery life is listed at 23 hours for the 47mm case and 41 hours for the 51mm, against 120 hours for the Garmin Enduro 3. At 77g in the 47mm size it is heavier than the 56g Garmin Forerunner 970.

Specs side-by-side

SpecApple Watch Ultra 3Garmin Fenix 8 Pro
Display SizeLTPO3 OLED (1.92in)1.4in AMOLED (454x454)
Display TypeAlways-on LTPO3 OLEDAMOLED
GPS Battery Life14 hours23 hours (47m), 41 hours (51mm)
Water ResistanceWR100 / EN1331910 ATM
Case Size49mm47, 51mm
Case MaterialtitaniumTitanium bezel and back
Weight61.8g77g (47mm)
Battery LifeUp to 42 hours of normal useUp to 15 days
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