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Garmin Forerunner 165 vs Garmin Fenix 8 Pro AMOLED 51mm

Buy the Forerunner 165 if you want a light, simple running watch with adaptive training plans and multi-day battery. Buy the Fenix 8 Pro if you need satellite and LTE messaging, offline maps, dive rating or a titanium build. The Forerunner is plastic and light; the Fenix is titanium with a sapphire lens and much heavier. Owners praise the Forerunner as an easy daily trainer, while Fenix owners rate it highly but note its size and subscription-dependent satellite features.

  • Choose the Forerunner 165 if you run, swim and train mostly near your phone and want a light watch that lasts days between charges.
  • Choose the Fenix 8 Pro if you go off-grid, need SOS messaging or maps on your wrist, or want a rugged titanium watch.

Prices

  • Garmin Forerunner 165: $159.99 at eBay (checked today)
  • Garmin Fenix 8 Pro AMOLED 51mm: $949.99 at Walmart (checked today)
  • Difference: the Garmin Forerunner 165 is $790.00 cheaper than the Garmin Fenix 8 Pro AMOLED 51mm today
Garmin
Garmin 010-02863-20 Forerunner 165 Smart Sport Watch

Garmin Forerunner 165

Garmin 010-02863-20 Forerunner 165 Smart Sport Watch

5(17 ratings)
$159.99at eBayChecked 6 h ago
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Pros
  • Light and comfortable for 24/7 wear
  • Adaptive training plans guide daily runs
  • Up to 11 days of battery life
  • Swim-ready and works with Android and iOS
Cons
  • No maps or turn-by-turn routing
  • No satellite or LTE messaging
  • Smaller display than the Fenix
  • Plastic build feels less premium
Garmin
Garmin Fenix 8 Pro Amoled Sport Watch 51mm

Garmin Fenix 8 Pro AMOLED 51mm

Garmin Fenix 8 Pro Amoled Sport Watch 51mm

4.3(275 ratings)
$949.99at WalmartChecked 42 min ago
See all prices and details
Visit Walmart
Pros
  • Satellite and LTE messaging with interactive SOS
  • Full maps and round-trip routing
  • Titanium bezel and scratch-resistant sapphire lens
  • Up to 27 days of battery and a 40-meter dive rating
Cons
  • Satellite features need an active subscription
  • 51mm titanium case is heavy and bulky
  • More complex menus than a running-focused watch
  • Overkill for runners who stay near a phone

What separates them

Garmin Forerunner 165Garmin Fenix 8 Pro AMOLED 51mm
Build and materialsPlastic case, lightweight for all-day wearTitanium bezel, sapphire lens, 51mm case, noticeably heavier
DisplayBright color display, smaller screen1.4-inch AMOLED, larger and sharper
Battery lifeUp to 11 days in smartwatch modeUp to 27 days in smartwatch mode
Off-grid connectivityBluetooth to a paired phone onlyBuilt-in inReach satellite and LTE for messaging and SOS, subscription required
Maps and routingGPS tracking and basic navigationFull maps and round-trip routing on the watch
Water ratingWater resistant and suitable for swimming40-meter dive rating
Training featuresAdaptive personalized training plans built for runnersFull multisport, strength and sport-specific workouts
Everyday comfortLight and unobtrusive on the wristLarge 51mm case can feel bulky for sleep and daily wear

Price history

$1,199.99$191.00
Oct 29Nov 15
  • Garmin Forerunner 165: lowest $191.00 on Nov 13 at Amazon; $191.00 on Nov 15.
  • Garmin Fenix 8 Pro AMOLED 51mm: lowest $949.99 on Nov 15 at Amazon.

Prices at every store

Garmin Forerunner 165

  • Dell Home & Home OfficeNew

    In stock

    $199.99Free shippingChecked 42 min ago
    Visit Dell Home & Home Office
  • BackcountryNew

    In stock

    $199.99Free shippingChecked 42 min ago
    Visit Backcountry
  • eBayNew

    Availability unknownSold by warblan-41 (100% positive, 313 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $159.99+ $7.86 shippingChecked 6 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $191.00Free shippingChecked 6 h ago
    Visit Amazon

Also available at

  • eBayCheck price at eBay

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All 30 stores and price history →

Garmin Fenix 8 Pro AMOLED 51mm

  • WalmartNew

    In stockSold by FrontRow TechReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $949.99Checked 42 min ago
    Visit Walmart
  • Best BuyNew

    In stock

    $949.99Free shippingChecked 42 min ago
    Visit Best Buy
  • BackcountryNew

    In stock

    $949.99Free shippingChecked 42 min ago
    Visit Backcountry
  • TargetNew

    In stock

    $949.99Free shippingChecked 42 min ago
    Visit Target

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission. Some prices via Klarna.

All 10 stores and price history →

Specs compared

SpecGarmin Forerunner 165Garmin Fenix 8 Pro AMOLED 51mm
ColorBlack51mm - Carbon Gray DLC Titanium/Black
With GPSYes—
Water ResistantYes—
For SwimmingYes—
Supported OSAndroid, iOS—
SizeOne Size—
ConnectivityBluetooth—
Watch StyleYes—
Max Battery LifeUp to 11 days—
Memory4 GB—
Color (Strap)—Gray, Black
Wireless Communication—Bluetooth
Show all 15 specsShow fewer specs
SpecGarmin Forerunner 165Garmin Fenix 8 Pro AMOLED 51mm
Features—Pedometer
Screen Type—AMOLED
Actual Color—51mm - Carbon Gray DLC Titanium/Black

What reviewers say

Garmin Forerunner 165

  • 5 / 517 ratings

Owners rate it 5 out of 5 across 17 ratings, and the praise centers on the screen, the training plans and the battery. Criticism is limited but points at GPS accuracy in tough conditions and the lack of music.

What people mention
  • DisplayPraisedOwners call the AMOLED screen bright and easy to read in sunlight.
  • Training plansPraisedBuyers say the adaptive plans give structure to their running.
  • BatteryPraisedUsers report close to the claimed 11 days in smartwatch mode.
  • GPS accuracyMixedTracking is fine on open roads but can drift under heavy cover.

Garmin Fenix 8 Pro AMOLED 51mm

  • 4.3 / 5275 ratings

Owners of the Fenix 8 Pro generally rate it highly as a premium multisport watch, praising the screen, battery life and build. Common complaints center on the large size and the high price.

What people mention
  • DisplayPraisedOwners say the AMOLED screen is bright and easy to read, even in sunlight.
  • BatteryMixedBattery life is long for most users, but the AMOLED screen drains it faster than Garmin's MIP displays.
  • SizeCriticisedThe 51mm case is often called bulky and heavy, especially on smaller wrists.

Questions and answers

Which is better for marathon training?
The Forerunner 165 is the simpler pick: its adaptive plans and light build suit daily run training. The Fenix 8 Pro adds more sport modes and maps, which help on long trail routes but add complexity.
Do I need a subscription for the Fenix 8 Pro?
Only for the satellite and LTE features. inReach messaging, LiveTrack over LTE and interactive SOS require an active subscription, and coverage varies by region. The watch's training and health features work without one.
Which lasts longer between charges?
The Fenix 8 Pro, at up to 27 days in smartwatch mode versus up to 11 days for the Forerunner 165. GPS use shortens both figures.
Can the Forerunner 165 be used for open-water swimming?
Yes. It is water resistant and supports swimming, and it tracks GPS swims. It does not carry the Fenix's 40-meter dive rating.
Is the Fenix 8 Pro worth stepping up to?
Only if you need off-grid messaging, maps or a rugged titanium watch. For road running and everyday tracking, the Forerunner 165 covers the essentials in a lighter package.
Which is more comfortable to sleep in?
The Forerunner 165. Its plastic case is much lighter, while the 51mm titanium Fenix 8 Pro is bulky on the wrist at night.

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More comparisons

  • Garmin 010-02863-20 Forerunner 165 Smart Sport Watch vs Garmin Vivoactive 5 Smartwatch
  • Garmin Vivoactive 5 Smartwatch vs Garmin Fenix 8 Pro Amoled Sport Watch 51mm
Build
Praised
Reviewers describe the watch as rugged and well made for outdoor use.