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Training for your first ultra marathon is a journey. It’s about pushing your limits, discovering new landscapes, and spending hours on your feet. As I embark on this adventure myself, one of the first things I realized is the importance of tracking my progress and staying on pace (or at least knowing how far off pace I am!). That’s where a good GPS watch comes in. It’s not just a gadget; it’s a training partner on your wrist. Let’s dive into some options and what to consider.
Why a GPS Watch for Trails or Ultras?
- Pacing: Knowing your pace, especially in the early stages, is crucial for not burning out too quickly.
- Distance Tracking: Ultras are long! A reliable watch will tell you exactly how far you’ve gone.
- Navigation: Many GPS watches offer navigation features, which can be a lifesaver on unmarked trails.
- Data Analysis: Tracking your heart rate, cadence, and other metrics can help you understand your body better and optimize your training.
- Battery Life: This is a HUGE one for ultras. You need a watch that will last as long as you’re out there (and maybe a bit longer!).
Let’s Look at Some Options:

- Pros: The latest flagship for a reason. The Forerunner 970 builds on the 965’s success with key hardware upgrades including a more durable sapphire crystal lens and a built-in LED flashlight, something I found to be surprisingly useful feature on the trail for early or late runs. It boasts incredible GPS accuracy with multi-band GNSS, a gorgeous AMOLED touch screen, and advanced training metrics. It’s a favorite among serious runners for its comprehensive data and reliability and my current watch choice after switching from the Fenix 5 that gave me 7 solid years. Top professionals like Courtney Dauwalter have relied on Garmin devices for their epic record-breaking runs for years.
- Cons: ON the pricier side. I’ve found the battery life is excellent in most modes, it may have a slightly shorter estimated battery life in standard smartwatch mode compared to its predecessor, though it excels in high-precision GPS modes. The sheer number of features might be more than a new runner needs, but the data is there if you want to dive deep.
- Buy Now on Amazon: Garmin Forerunner 970
A great GPS watch for trail running is far more than a simple gadget. It’s a key part of your support crew, a coach on your wrist, and a tool for self-discovery.

- Pros: Incredible battery life (up to 75 hours in full GPS mode!), accurate GPS, robust build quality, intuitive interface, excellent value for the features offered. Kilian Jornet is a prominent COROS athlete and uses their watches for his demanding mountain runs, a testament to their durability and performance.
- Cons: Fewer third-party app integrations compared to Garmin. I found that the maps work well, but weren’t as detailed as some competitors.
- Buy Now on Amazon: COROS APEX 2 Pro

- Pros: Sleek and lightweight design, excellent battery life (up to 40 hours with best GPS), accurate GPS, comprehensive sports modes, good for multisport athletes. Suunto has a strong reputation in the ultra community for reliable and durable watches.
- Cons: Interface can be less intuitive for some users. Navigation features might not be as advanced as Garmin or COROS.
- Buy Now on Amazon: Suunto 9 Peak Pro
Things to Consider When Choosing:
Things to Consider when choosing
- Budget: GPS watches range in price significantly. Decide how much you’re willing to spend.
- Battery Life Needs: How long do you anticipate being out on the trails for training and the race itself?
- Features You’ll Actually Use: Don’t pay for features you don’t need. Do you prioritize navigation, detailed metrics, or simplicity?
- Comfort and Fit: You’ll be wearing this watch for many hours. Make sure it’s comfortable on your wrist.
Choosing the right GPS watch is a personal decision. Do your research, read reviews, and consider what features are most important for your trail journey. Happy training!
