10 Best Triathlon Watch of December 2025

• 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

Garmin

• AUTO ACTIVITY DETECTION Capture different activities automatically and view them on Garmin Connect online
• 1 YEAR BATTERY LIFE No recharging needed. Regular:135 205 millimeter circumference X large:165 225 millimeter circumference
• 24/7 WEARABILITY The sleek silicone band is comfortable to wear all day on land or in the water. Battery : One replaceable CR1632 coin cell. Smartphone compatibility-iPhone, Android
• GCM COMPATIBLE Sync automatically or manually with our free smartphone app to view and analyze your stats
• Display size 10 millimeter x 10 millimeter. Display type sunlight visible, transflective memory in pixel (MIP). Display resolution: 64 x 64 pixels

Garmin

• 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

Garmin

• 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

Garmin

• 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

Garmin

• 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

Garmin

• Feature-packed with 13 workout modes to track your running, swimming, cycling and cardio activities.
• Optical heart rate monitor that supports HR broadcast in ANT+/Bluetooth connection to your favorite accessories and training apps.
• Best-in-class battery life with 30 days of regular use, 25 hours in full GPS mode and 50 hours in UltraMax GPS mode.
• Built-in altimeter, barometer and compass for more accurate workout tracking.
• Industry leading GPS and distance tracking via GPS, GLONASS or BDS satellites and proprietary algorithms even in dense woods with direct integration with popular 3rd party training platforms like Strava, TrainingPeaks, Relive, Final Surge and Runalyze.

Coros

• Adjustable black 16 millimeter resin strap fits up to 8-inch wrist circumference
• 100-hour chronograph with 30-lap memory; 24-hour countdown timer.On-Screen Prompts Make Setting Easy Forward or Backward Setting
• 3 daily, weekday or weekend alarms; 24-hour military time mode; 3 time zones; Day, date and month calendar
• Gray and black 38 millimeter resin case with acrylic lens; Gray digital display; Indiglo light-up watch dial
• Water resistant to 100 meter (330 feet): In general, suitable for swimming and snorkeling, but not diving

Timex

• Garmin Pay contactless payment solution lets you pay for purchases with your watch (available for supported cards from participating banks)
• Personalize your watch with thousands of free watch faces, apps and widgets from our Connect IQ store
• More than 15 preloaded GPS and indoor sports apps, including yoga, running, swimming and more
• Monitor your fitness level with VO2 max and fitness made estimates, plus keep an eye on how you handle stress
• Get connected features such as smart notifications, automatic uploads to Garmin Connect, Live Track and more when paired with a compatible smartphone
• Battery life: up to 7 days in smartwatch mode; 13 hours in GPS mode.Display size:1.2 inch diameter

Garmin

• Adjustable white 12 millimeter resin strap fits up to 7.5-inch wrist circumference ,Strap and Lug Width: 12 mm
• 100-hour chronograph with 10-lap memory; 24-hour countdown timer
• customizable alarm; 24-hour military time mode; 2 time zones; Day, date & month calendar
• White & rose gold-tone 33 millimeter resin case; acrylic lens; gray digital display; Indiglo light-up watch dial
• Water-resistant to 100 meter (330 feet): In general, suitable for snorkeling, as well as swimming, but not diving

Timex