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10 Best Triathlon Watches 2025 in the United States
#1
Winner
Apple Watch Ultra 3 [GPS + Cellular 49mm] Running & Multisport Smartwatch w/Rugged Titanium Case w/Black Alpine Loop - L. Satellite Communications, Advanced Health & Fitness Tracking
![Apple Watch Ultra 3 [GPS + Cellular 49mm] Running & Multisport Smartwatch w/Rugged Titanium Case w/Black Alpine Loop - L. Satellite Communications, Advanced Health & Fitness Tracking](https://images-proxy.bestreviews.guide/QGDHSH8CU6kP68tlj1Kf8d-wK_A=/0x300/https://m.media-amazon.com/images/I/412vVDB7SSL._AC_CX679_.jpg)
The Apple Watch Ultra 3 is a strong contender for triathletes thanks to its rugged design and comprehensive features. Its titanium case and sapphire crystal display make it highly durable and able to withstand tough conditions, including water resistance up to 100 meters—ideal for swimming and water sports. Battery life is solid, offering up to 42 hours of regular use and up to 72 hours in a low power mode, which is beneficial for long training sessions or races. GPS accuracy is top-notch with dual-frequency support, helping athletes track routes precisely across running, cycling, swimming, and other multisport activities.
Rating
10.0
Chosen by1,335
Battery Life
Heart Rate Monitoring
Connectivity
Most important from
120 reviews
#2
Apple Watch SE 3 [GPS 44mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - M/L. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
![Apple Watch SE 3 [GPS 44mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - M/L. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://images-proxy.bestreviews.guide/iFp3fR2fnn_O_fgovpVtO7hcYI8=/0x300/https://m.media-amazon.com/images/I/41IZwhp9VXL._AC_CX679_.jpg)
The Apple Watch SE 3 (44mm GPS) is a solid choice for those interested in a versatile multisport smartwatch, including triathletes who want a reliable fitness partner. It offers good battery life with about 18 hours of use and fast charging, which is convenient for daily tracking and quick turnarounds between workouts. Its GPS capabilities include support for multiple satellite systems (L1 GPS, GLONASS, Galileo, QZSS), which helps with accurate location tracking during swims, bikes, and runs. The heart rate sensor is advanced, providing high and low heart rate alerts and irregular rhythm notifications, contributing to safety during intense training. While it tracks a variety of workouts and offers an always-on display for easy data viewing, it does not have a specialized multisport mode that automatically switches between activities, which some dedicated triathlon watches provide.
Rating
9.4
Battery Life
Heart Rate Monitoring
Connectivity
Most important from
180 reviews
#3
Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
![Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant](https://images-proxy.bestreviews.guide/RQ7rAGarkvUq4U4HLhB60yC7Zj0=/0x300/https://m.media-amazon.com/images/I/31Gq8SToFJL._AC_CX679_.jpg)
The Apple Watch SE 3 is a versatile smartwatch that offers solid features for fitness enthusiasts, including those interested in triathlon training. Its battery life supports about 18 hours of typical use, which should get you through a full day but may require daily charging if used heavily. The watch includes built-in GPS with support for multiple satellite systems (L1 GPS, GNSS, Galileo, QZSS), providing reliable location tracking for outdoor activities like running and cycling. Heart rate monitoring is well-covered with notifications for high, low, or irregular rhythms, and the second-generation optical sensor improves accuracy during workouts.
Rating
9.1
Battery Life
Heart Rate Monitoring
Connectivity
Most important from
180 reviews
Top 10 Best Triathlon Watches 2025 in the United States
#1
Winner
Apple Watch Ultra 3 [GPS + Cellular 49mm] Running & Multisport Smartwatch w/Rugged Titanium Case w/Black Alpine Loop - L. Satellite Communications, Advanced Health & Fitness Tracking
Apple Watch Ultra 3 [GPS + Cellular 49mm] Running & Multisport Smartwatch w/Rugged Titanium Case w/Black Alpine Loop - L. Satellite Communications, Advanced Health & Fitness Tracking
Battery Life: Up to 42h normal, 72h low power
Water Resistance: 100m per ISO 22810:2010
GPS Accuracy: Precision dual-frequency GPS
Heart Rate Monitoring: Electrical sensor, ECG app, optical sensor
Multisport Mode: Running, Hiking, Cycling, Swimming, Skiing
Durability: Grade 5 titanium, sapphire, MIL-STD 810H
Connectivity: LTE, Wi-Fi 4, Bluetooth 5.3, UWB
Chosen by 1335 this week
Apple Watch SE 3 [GPS 44mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - M/L. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Apple Watch SE 3 [GPS 44mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - M/L. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Battery Life: about 18 hours, up to 32 hours low power
Water Resistance: suitable for swimming, not deep or prolonged
GPS Accuracy: L1 GPS, GLONASS, Galileo, QZSS
Heart Rate Monitoring: high/low alerts, irregular rhythm notifications
Multisport Mode: no specialized multisport mode
Durability: crack-resistant Ion-X glass, aluminum case
Connectivity: Bluetooth 5.3, Wi-Fi, GPS; cellular optional
Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Apple Watch SE 3 [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Battery Life: about 18 hours typical use
Water Resistance: suitable for swimming, no dive rating
GPS Accuracy: Built-in GPS with L1, GNSS, Galileo
Heart Rate Monitoring: 2nd-gen optical sensor, rhythm alerts
Multisport Mode: via Workout app, tracks exercises
Durability: crack-resistant glass, aluminum case
Connectivity: Bluetooth 5.3, Wi-Fi, LTE
Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant
Apple Watch Series 11 [GPS 46mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant
Battery Life: up to 24 hours use
Water Resistance: 50m
GPS Accuracy: L1 GPS, GNSS, Galileo, QZSS, BeiDou
Heart Rate Monitoring: optical and electrical sensors
Durability: Water 50m, Dust IP6X, scratch glass
Connectivity: Bluetooth 5.3, Wi-Fi 4, 5G, LTE
Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant
Apple Watch Series 11 [GPS 42mm] Smartwatch with Jet Black Aluminum Case with Black Sport Band - S/M. Sleep Score, Fitness Tracker, Health Monitoring, Always-On Display, Water Resistant
Battery Life: up to 24h normal, 38h Low Power
Water Resistance: 50m
GPS Accuracy: L1 GPS, Galileo, QZSS, BeiDou
Heart Rate Monitoring: alerts, ECG, blood oxygen levels
Multisport Mode: advanced metrics, Apple Fitness+
Durability: durable glass, scratch resistant, IP6X
Connectivity: Bluetooth 5.3, Wi-Fi, 5G, LTE
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Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Apple Watch SE 3 [GPS 40mm] Smartwatch with Starlight Aluminum Case with Starlight Sport Band - S/M. Fitness and Sleep Trackers, Heart Rate Monitor, Always-On Display, Water Resistant
Battery Life: about 18 hours
Water Resistance: water resistant
GPS Accuracy: Built-in GPS with L1, Galileo, QZSS
Heart Rate Monitoring: 2nd-gen optical sensor with alerts
Multisport Mode: supports multisport workouts
Durability: aluminum case, crack-resistant glass
Connectivity: Bluetooth 5.3, Wi-Fi, 5G, LTE
Apple Watch SE (2nd Gen) [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band S/M. Fitness and Sleep Trackers, Crash Detection, Heart Rate Monitor, Retina Display
Apple Watch SE (2nd Gen) [GPS 40mm] Smartwatch with Midnight Aluminum Case with Midnight Sport Band S/M. Fitness and Sleep Trackers, Crash Detection, Heart Rate Monitor, Retina Display
Battery Life: about one day
Water Resistance: 50 meters
GPS Accuracy: Built-in GPS
Heart Rate Monitoring: Heart rate monitor
Multisport Mode: supports multiple workouts
Durability: aluminum case
Connectivity: Wi-Fi, Bluetooth, calls, texts, music
Garmin® Forerunner® 970, Premium GPS Running and Triathlon Smartwatch, AMOLED Display, Built-in LED Flashlight, Titanium with Whitestone Case and Whitestone/Translucent Amp Yellow Band
Garmin® Forerunner® 970, Premium GPS Running and Triathlon Smartwatch, AMOLED Display, Built-in LED Flashlight, Titanium with Whitestone Case and Whitestone/Translucent Amp Yellow Band
Battery Life: 15 days smartwatch, 26 hours GPS
GPS Accuracy: Built-in multi-band GPS
Heart Rate Monitoring: Advanced running, power, ECG app, HRM 600
Multisport Mode: Auto-transition swim, bike, run
Durability: Lightweight titanium bezel, sapphire lens
Connectivity: Bluetooth
Garmin Forerunner 265 Running Smartwatch, Colorful AMOLED Display, Training Metrics and Recovery Insights, Black and Powder Gray
Garmin Forerunner 265 Running Smartwatch, Colorful AMOLED Display, Training Metrics and Recovery Insights, Black and Powder Gray
Battery Life: 13 days smartwatch; 20 hours GPS
GPS Accuracy: Multi-band GNSS with SatIQ tech
Heart Rate Monitoring: Integrated heart rate monitoring
Multisport Mode: 30+ sport profiles, triathlon mode
Connectivity: Bluetooth, Wi-Fi, USB, Garmin Pay
#10
Apple Watch Series 10 [GPS 46mm case] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Apple Watch Series 10 [GPS 46mm case] Smartwatch with Jet Black Aluminum Case with Black Sport Band - M/L. Fitness Tracker, ECG App, Always-On Retina Display, Water Resistant
Battery Life: Up to 18 hours normal use
Water Resistance: Water resistant 50m, swimproof
GPS Accuracy: L1 GPS, GNSS, Galileo, BeiDou
Heart Rate Monitoring: Electrical and optical sensors, ECG app
Multisport Mode: Running, Hiking, Cycling, Swimming, Skiing
Durability: Water resistant 50m, Dust IP6X
Connectivity: GPS, LTE, Wi-Fi 4, Bluetooth 5.3
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Buying Guide for the Best Triathlon Watches
Choosing the right triathlon watch can significantly enhance your training and performance. A triathlon watch is designed to support you through swimming, cycling, and running, providing valuable data and insights to help you improve. When selecting a triathlon watch, it's important to consider various specifications that align with your training needs and goals. Here are some key specs to look out for and how to choose the best fit for you.Battery LifeBattery life refers to how long the watch can operate on a single charge. This is crucial for triathletes who may be training or competing for extended periods. Battery life can range from a few hours to several days. If you participate in long-distance events like Ironman, look for a watch with a longer battery life, ideally over 20 hours in GPS mode. For shorter events or daily training, a watch with 10-15 hours of battery life may suffice.
Water ResistanceWater resistance indicates how well the watch can withstand water exposure. This is essential for swimming segments of a triathlon. Watches typically have water resistance ratings measured in meters. A rating of 50 meters is generally sufficient for swimming, but if you plan to dive or swim in deeper waters, consider a watch with a 100-meter rating or more. Ensure the watch is specifically designed for swimming to avoid any damage.
GPS AccuracyGPS accuracy determines how precisely the watch can track your location and distance. This is important for monitoring your performance in cycling and running. GPS accuracy can vary based on the watch's technology and the environment. Look for watches with multi-satellite support (GPS, GLONASS, Galileo) for better accuracy. If you train in urban areas or dense forests, a watch with advanced GPS features will provide more reliable data.
Heart Rate MonitoringHeart rate monitoring tracks your heart rate during activities, helping you manage your effort and optimize training. Watches can have wrist-based sensors or require a chest strap for more accurate readings. If you prefer convenience, a wrist-based monitor is suitable, but for more precise data, especially during intense workouts, a chest strap is recommended. Choose based on your training intensity and need for accuracy.
Multisport ModeMultisport mode allows you to switch between different sports (swimming, cycling, running) seamlessly during a triathlon. This feature is important for tracking your performance across all segments without manually changing settings. Ensure the watch has an easy-to-use multisport mode that can be customized to your specific training and race needs. This will save time and provide comprehensive data for analysis.
DurabilityDurability refers to the watch's ability to withstand tough conditions and regular use. Triathlons can be demanding, so a durable watch is essential. Look for watches with robust materials like stainless steel or reinforced plastic, and features like scratch-resistant screens. If you train in harsh environments or have a rigorous training schedule, prioritize durability to ensure your watch lasts longer and performs reliably.
ConnectivityConnectivity options, such as Bluetooth and Wi-Fi, allow the watch to sync with other devices and apps for data transfer and analysis. This is useful for tracking progress, setting goals, and sharing results. If you use training apps or like to review your performance data on a computer or smartphone, choose a watch with strong connectivity features. This will enhance your training experience and provide more insights.