10 Best Sports Watches For Triathlon 2025 in the United States

The COROS PACE Pro is a strong contender for triathlon athletes looking for a reliable, feature-rich sports watch. Its bright 1.3-inch AMOLED touchscreen offers sharp, vibrant visuals that remain clear in bright sunlight or low light—great for early morning swims or late runs. The watch boasts an impressive battery life, lasting up to 20 days with regular use and about 31-38 hours during GPS-tracked activities, which is very helpful for long training sessions or multi-day events.

The GPS system is highly accurate thanks to a new satellite chipset, so you can trust it to track your running, cycling, and swimming routes precisely. Navigation with offline global maps and turn-by-turn directions adds convenience for exploring unfamiliar courses. It supports multisport modes and connects via Bluetooth to the COROS app, which provides useful fitness insights like training status and sleep tracking. Durability seems solid with a silicone band and sturdy build. The USB-C charging port is a practical feature for quick and universal charging.

This watch is ideal for triathletes who want a powerful, easy-to-read device with excellent battery life and GPS. Those needing detailed swim tracking or integrated heart rate monitoring should verify those features before purchasing.

The COROS PACE 3 GPS Sport Watch is a strong choice for triathletes looking for a lightweight and comfortable device. Weighing just 30 grams and featuring a slim 11.7mm profile, it’s easy to wear all day without feeling bulky. Its 1.2-inch always-on touchscreen is easy to read outdoors thanks to its transflective display. Battery life stands out with up to 38 hours of continuous GPS use, making it reliable for long training sessions or races. The watch uses a dual-frequency GPS chipset for enhanced accuracy, which is especially useful in urban or challenging environments.

It supports a variety of sports modes including running, cycling, swimming, and skiing, fitting well with the multisport demands of triathlon training. Additionally, features like route planning and breadcrumb navigation help with staying on course during outdoor activities. Heart rate monitoring and sleep tracking provide useful health insights. Connectivity via Bluetooth is available, but with limited storage (0.1 GB) and it runs on AsteroidOS, which may offer fewer third-party apps compared to more common operating systems.

The COROS PACE 3 offers many essentials triathletes need—accuracy, comfort, battery life, and multisport tracking—in a sleek design, though it is advisable to verify its water resistance and software ecosystem against your exact needs before making a purchase.

The SUUNTO Vertical GPS Sports Watch is a strong choice for triathletes and outdoor enthusiasts who need reliable and detailed tracking during multisport activities. It excels in GPS accuracy thanks to dual-band support across multiple satellite systems, which means you get precise location tracking even in challenging environments. With over 95 sport modes, including swimming, cycling, and running, it’s well-suited for the varied demands of a triathlon.

The watch also offers a long battery life of up to 60 hours in performance mode, which is beneficial for long training sessions or races, and 60 days in daily use, so frequent charging is less of a worry. Heart rate, sleep, and stress monitoring are continuous, helping you keep tabs on your health and recovery, which is important for training balance. The large 1.4-inch touchscreen is easy to read outdoors, and the build quality is impressive—with sapphire crystal and stainless steel ensuring the watch can handle drops, shocks, and harsh weather conditions, including water exposure.

Navigation features like offline maps and breadcrumb trails provide extra safety during outdoor workouts. Connectivity via Bluetooth and compatibility with popular fitness apps like Strava make syncing and analyzing your data straightforward. The SUUNTO Vertical delivers a solid mix of durability, precision, and battery endurance, making it a reliable companion for triathletes who want detailed insights and robust outdoor functionality.