Training for a marathon requires dedication, a well-structured plan, and the right tools to help you track and optimize your performance. One essential piece of gear for any marathon runner is a reliable running watch.
Whether you’re a beginner looking to build endurance or an experienced athlete striving for a personal best, the right running watch can provide you with actionable insights to help you reach your goals.
Here, we’ve compiled a list of the top five best running watches for marathon training in 2025, highlighting their key features and benefits to make your decision easier.
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Why a Running Watch is Essential for Marathon Training
Training for a marathon requires dedication, a well-structured plan, and the right tools to help you track and optimize your performance.
A running watch is more than just a device to measure time—it’s a training partner that provides insights into your pace, distance, heart rate, and recovery. With features like GPS tracking, training readiness, and advanced metrics, running watches are designed to help athletes of all levels optimize their performance and avoid overtraining.
By choosing the right watch, you can take a data-driven approach to your marathon preparation and ensure you’re on track to meet your goals.
One essential piece of gear for any marathon runner is a reliable running watch. Whether you’re a beginner looking to build endurance or an experienced athlete striving for a personal best, the right running watch can provide you with actionable insights to help you reach your goals.
Here, we’ve compiled a list of the top five best running watches for marathon training in 2025, highlighting their key features and benefits to make your decision easier.
1. Garmin Forerunner 965
The Garmin Forerunner 965 is the pinnacle of running technology in 2025. Designed for serious runners and marathon enthusiasts, this watch combines advanced metrics with exceptional comfort and durability.
Key Features:
- AMOLED Display: A vibrant AMOLED touchscreen ensures you can easily view stats even in bright sunlight.
- Training Readiness: This feature evaluates your sleep, recovery, and training history to let you know when you’re ready for a hard workout.
- Multi-Band GPS: With multi-band GNSS support, you get highly accurate location tracking, even in challenging environments.
- Running Dynamics: Metrics like stride length, cadence, and ground contact time help you fine-tune your form.
- Battery Life: Up to 23 days in smartwatch mode and 31 hours in GPS mode.
The Garmin Forerunner 965 also offers music storage, maps, and a suite of smart features like notifications and payments, making it a comprehensive tool for marathon training and daily use.
See Garmin Forerunner 965 on Amazon
2. Coros Pace 3
For runners seeking a budget-friendly option without sacrificing essential features, the Coros Pace 3 is an excellent choice. This lightweight and durable watch is designed for runners who want simplicity and performance at a reasonable price.
Key Features:
- Efficient GPS Tracking: Offers accurate GPS tracking for your runs with minimal battery drain.
- Training Plans: Includes a variety of built-in training plans for beginners and advanced runners alike.
- Heart Rate Monitoring: Tracks your heart rate continuously for insights into effort and recovery.
- Customizable Data Screens: Allows you to tailor the display to show the metrics that matter most to you.
- Battery Life: Up to 24 days in regular use and 38 hours in full GPS mode.
The Coros Pace 3 is a reliable partner for marathon training, offering all the core features you need to improve your performance.
See Coros Pace 3 on Amazon
3. Polar Vantage V3
The Polar Vantage V3 is a premium running watch tailored for athletes who want to take their marathon training to the next level. It excels in tracking detailed performance metrics and providing actionable feedback.
Key Features:
- Polar’s Training Load Pro: This feature measures how your training affects your body and helps prevent overtraining.
- Heart Rate Variability (HRV): Provides insights into recovery and readiness to train.
- Running Power: Tracks running power directly from the wrist, eliminating the need for additional sensors.
- Sleep and Recovery Tracking: Offers advanced sleep analysis to help you optimize your rest.
- Battery Life: Up to 30 hours in GPS mode and 8 days in smartwatch mode.
The Polar Vantage V3’s focus on recovery and training load makes it a standout choice for runners aiming to balance intensity with proper rest.
See Polar Vantage V3 on Amazon
4. Suunto Vertical
The Suunto Vertical is an ultra-rugged running watch perfect for marathoners who train on trails or in extreme environments. It combines robust durability with advanced tracking capabilities to handle any challenge.
Key Features:
- Barometric Altimeter: Tracks elevation gain and loss with pinpoint accuracy, ideal for hilly marathon courses.
- Offline Maps: Navigate unfamiliar routes with ease using preloaded maps.
- Solar Charging: Extends battery life during outdoor training sessions.
- Weather Forecasts: Provides real-time weather updates to help you plan your runs.
- Battery Life: Up to 30 days in smartwatch mode and 85 hours in GPS mode with solar assistance.
If you’re a marathoner who enjoys tackling diverse terrains, the Suunto Vertical is a rugged and reliable companion.
See Suunto Vertical on Amazon
5. Apple Watch Ultra 2
The Apple Watch Ultra 2 is not just a smartwatch; it’s a highly capable running tool with features tailored for marathon training. It seamlessly integrates with third-party running apps while offering Apple’s robust ecosystem.
Key Features:
- Precision GPS: Tracks your routes with exceptional accuracy, even in urban environments with tall buildings.
- Action Button: Provides quick access to customizable features, such as starting a run or marking laps.
- Advanced Workout Metrics: Measures running dynamics, heart rate zones, and elevation.
- Dual-Frequency GPS: Enhances tracking accuracy in challenging conditions.
- Battery Life: Up to 36 hours with normal use and 72 hours in low-power mode.
With its sleek design and robust feature set, the Apple Watch Ultra 2 is perfect for runners who want a device that transitions seamlessly from training to daily life.
See Apple Watch Ultra 2 on Amazon
Choosing the Right Running Watch
When selecting the best running watch for your marathon training, consider your individual needs and priorities.
Think about the importance of accuracy, battery life, and specific features like recovery tracking, training plans, or offline maps. Durability is also essential, particularly if you train in challenging conditions, and comfort should never be overlooked since you’ll be wearing the watch during long runs.
Each of these five running watches offers unique benefits, so by selecting one that aligns with your goals, you’ll be well-equipped to achieve your marathon aspirations.