10 Best Garmin Triathlon Watch of December 2025

List of Top Rated Garmin Triathlon Watch from thousands of customer reviews & feedback.

Updated On Dec 2025

2,609 Reviews Studied

By Customer Ratings

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Garmin Forerunner 945, Premium GPS Running/Triathlon Smartwatch with Music, Black Read Review

  • Premium GPS running/triathlon smartwatch with music
  • Download songs to your watch, including playlists from Spotify, Amazon Music or Deezer (may require premium subscription with a third party music provider)
  • Performance monitoring features include Vo2 Max and training status with adjustments for heat, altitude Acclimation status, training load focus, recovery time, and aerobic and anaerobic training effects
  • Garmin Pay contactless payment solution (available for supported cards from participating banks) lets you make convenient payments with your watch so you can leave your cash and cards at home
  • Full color, onboard maps guide you on your run so you never get lost during your workout
  • Safety and tracking Features include incident detection (during select activities) which sends your real time location to emergency contacts through your paired compatible smartphone
  • Battery life: Upto 2 weeks in smartwatch mode, 10 hours in GPS mode with music or upto 60 hours in UltraTrac mode. Display resolution - 240 x 240 pixels

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Garmin fēnix 5, Premium and Rugged Multisport GPS Smartwatch, Slate Gray/Black Band, 47 MM Read Review

  • Premium multisport GPS watch with Elevate wrist heart rate technology. Physical size 1.8 x 1.8 x 0.6 inches. QuickFit watch band compatible included (22 mm)
  • Fit for adventure with rugged design that features stainless steel bezel, buttons and rear case. Display type : sunlight visible, transflective memory in pixel (MIP)
  • Put key stats at your fingertips with the performance widget that shows the effects and progress of your workouts. Case material : Fiber reinforced polymer with stainless steel rear cover
  • Connected features include smart notifications, automatic uploads to Garmin Connect online fitness community and personalization through free watch faces and apps from our Connect IQ store.Display size: 1.2 inches (240 x 240)
  • Outdoor sensors, including GPS and GLONASS satellite reception and 3 axis compass with gyroscope and barometric altimeter

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Garmin 010-01863-00 Forerunner 645, GPS Running Watch with Pay Contactless Payments and Wrist-Based Heart Rate, Black, 1... Read Review

  • Garmin Pay contactless payment solution lets you make convenient payments with your watch (available for supported cards from participating banks) so you can leave your cash and cards at home
  • Provides advanced running dynamics, including ground contact time balance, stride length, vertical ratio and more. Connectivity Bluetooth, ANT+, Wi Fi
  • Uses wrist based heart rate to offer performance monitoring Features, including evaluating your current training status.Display resolution:240 x 240 pixels
  • Connected features include smart notifications, automatic uploads to Garmin Connect and the ability for others to track your runs with the Live Track feature
  • Customize with free watch faces, apps and more from our Connect IQ store
  • Battery life: up to 7 days in smartwatch mode; 12 hours in GPS mode

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Garmin Forerunner 35; Easy-to-Use GPS Running Watch, Black Read Review

  • Easy-to use GPS running watch tracks how far, how fast and where you run
  • Estimates heart rate at the wrist, all day and night, using Garmin Elevate wrist heart rate technology
  • Connected features: smart notifications, automatic uploads to Garmin Connect, live tracking and music controls (when paired with a compatible smartphone)
  • All-day activity tracking estimates steps, calories and intensity minutes and reminds you when to move
  • Automatically uploads your data to Garmin Connect, our free online fitness community where you can join challenges, receive insights and share your progress as you meet your goals

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Garmin 010-02064-00 Instinct, Rugged Outdoor Watch with GPS, Features Glonass and Galileo, Heart Rate Monitoring and 3-... Read Review

  • Rugged GPS watch built to withstand the toughest environments
  • Constructed to U.S. Military standard 810G for thermal, shock and water resistance (rated to 100 meters)
  • Built in 3 axis compass and barometric altimeter, plus multiple global navigation satellite systems (GPS, Glonass and Galileo) support helps track in more challenging environments than GPS alone
  • Monitor your estimated heart rate, activity and stress; Train with preloaded activity profiles.Strap material:Silicone
  • Stay connected with smart notifications (with a compatible smartphone) and automatic data uploads to the Garmin connect online fitness community
  • Use the Tracback feature to navigate the same route back to your starting point; Use the Garmin explore website and app to plan your trips in advance
  • Battery life: Upto 14 days in smartwatch mode, upto 16 hours in GPS mode, upto 40 hours in Ultratrac battery saver mode

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Garmin 010-01614-06 Forerunner 735XT - EU, Black/Gray Read Review

  • Form factor - the most lightweight multisport-capable watch ever from Garmin in an attractive, traditional watch shape, with soft, comfortable silicone bands
  • Built-in activities - data support for: running, cycling, swimming, multisport, hiking, xc skiing, strength, paddle sports and cardio
  • 24/7 Heart rate monitoring - Elevate wrist Heart rate gives you Heart rate all day and night -no additional Strap required
  • Connected Features - automatic uploads to Garmin connect, Live Tracking, audio Prompts, music controls, Smart notifications and social media sharing
  • Smart notifications - get any notification from your Phone, including incoming call alerts, texts, and social media, all with vibration so you don’t Miss a thing

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Garmin Vívoactive 3, GPS Smartwatch with Contactless Payments and Built-in Sports Apps, White/Silver Read Review

  • Garmin Pay contact less payment solution lets you pay for purchases with your watch (available for supported cards from participating banks) , Display size 1.2 inches in diameter
  • Personalize your watch with thousands of free watch faces, apps and widgets from our Connect IQ store. GLONASS, Barometric altimeter, Compass, Accelerometer, Thermometer sensors are available
  • More than 15 preloaded GPS and indoor sports apps, including yoga, running, swimming and more; Case material : Fiber reinforced polymer with stainless steel rear cover
  • Monitor your fitness level with VO2 max and fitness made estimates, plus keep an eye on how you handle stress; Memory/History: 7 timed activities, 14 days of activity tracking data
  • Get connected features such as smart notifications, automatic uploads to Garmin connect, LiveTrack and more when paired with a compatible smartphone; Strap material: Silicone
  • Battery life: Upto 7 days in smartwatch mode; 13 hours in GPS mode; Connectivity: Bluetooth Smart and ANT
  • Note : Kinldy refer to the user manual before setting up the product

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Garmin Forerunner 935 Running GPS Unit (Black) Read Review

  • Premium GPS running/triathlon watch with wrist based heart rate;Strap material : silicone ; Smartphone compatibility : iPhone, Android, Windows; designed for sale and support in North America only
  • Offers advanced running and multisport Features in a comfortable watch you can wear all day, and it only weighs 49 grams
  • Provides elevation changes with a built in barometer; altimeter and electronic compass help you keep your bearings
  • Evaluates your training status to indicate if you’re undertraining or overdoing it and offers additional performance monitoring Features
  • Provides advanced dynamics for running, cycling and swimming, including ground contact time balance, stride length and more. Bezel Material Fiber reinforced polymer

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Garmin Forerunner 735XT, Multisport GPS Running Watch with Heart Rate, Black/Gray Read Review

  • GPS running watch with multisport features
  • Estimates heart rate at the wrist so you can run freer on race day.Shock resistant. Battery life : Smartwatch Mode Up to 11 days. GPS mode Up to 14 hours. UltraTrac mode Up to 24 hours without wrist heart rate
  • Provides advanced dynamics for running, cycling and swimming7, including ground contact time balance, stride length, vertical ratio and more (when paired with a Running Dynamics Pod, HRM Run or HRM Tri Monitor, sold separately)
  • Offers VO2 max estimate, lactate threshold (when used with a chest strap heart rate monitor), race predictor and recovery advisor
  • Connected features4: smart notifications, automatic uploads to Garmin Connect, live tracking and more
  • Customize with free watch faces, apps and more from our Connect IQ store

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Garmin vívoactive 3 Music, GPS Smartwatch with Music Storage, Supports Spotify - Black (Renewed) Read Review

  • Easily download up to 500 songs to your watch, and connect with Bluetooth headphones (sold separately) for phone-free listening
  • Garmin Pay contactless payment solution lets you make convenient payments with your watch, so you can leave your cash and cards at home
  • Customize with thousands of free watch faces, apps and more from our Connect IQ store
  • More than 15 preloaded sports apps, including yoga, running, swimming, strength training and many more; use preloaded workouts, or create and download custom ones
  • Monitor your fitness level with VO2 max and fitness age estimates, plus keep an eye on how you handle stress