Let Me Walk You Through the Garmin Forerunner 45S Watch
When the need for a reliable GPS running watch became apparent after my previous device finally gave up the ghost during a crucial training run, I started my search for a replacement. My previous watch, while functional, lacked the comprehensive metrics and user-friendly interface I’d come to rely on for detailed performance analysis. The Garmin Forerunner 45S Watch, a name synonymous with quality in the fitness tech space, quickly rose to the top of my list due to its reputation for accuracy and robust feature set in a compact package. I was looking for something that wouldn’t just track my runs but also offer actionable insights without being overly complicated.
My initial impression upon unboxing this Garmin Forerunner 45S Watch was one of understated quality. The silicone band felt supple yet durable, and the fiber-reinforced polymer bezel exuded a sense of ruggedness without adding excessive bulk. It felt surprisingly lightweight, which is a significant plus for something intended for all-day wear, especially during intense physical activity. I briefly considered a few other brands, but Garmin’s consistent performance and extensive ecosystem always pull me back. The immediate feeling was one of relief, knowing I had a promising candidate to get me back on track.
Real-World Testing: Putting Garmin Forerunner 45S Watch to the Test
First Use Experience
My testing began on my usual suburban running routes, which include a mix of paved roads, light gravel paths, and occasional shaded park trails. The Garmin Forerunner 45S Watch performed admirably, locking onto GPS signals remarkably fast, often within seconds of powering it on. The display, a sunlight-visible, transflective memory-in-pixel (MIP) type, proved to be exceptionally clear even under direct midday sun, a crucial factor for quick glances during a run.
Throughout those initial runs, I found the interface surprisingly intuitive. Navigating through the various screens and data fields was straightforward, even with sweaty hands. There was a slight learning curve with the five-button layout, but it quickly became second nature. The only minor surprise was how quickly the battery drained during a particularly long GPS-intensive trail run; it held up for most of the outing, but I learned to monitor it more closely for extended adventures.
Extended Use & Reliability
After several weeks of consistent use, logging anywhere from three to five runs per week, the Garmin Forerunner 45S Watch has proven to be a dependable companion. Its durability has been put to the test with a few accidental brushes against doorframes and a light shower during an unexpected downpour, and it has emerged without any noticeable scuffs or performance degradation. The 5 ATM water resistance rating means it handles sweat and rain with ease.
Maintenance is refreshingly simple; a quick wipe-down with a damp cloth after a sweaty run is all that’s needed to keep it looking and functioning its best. Compared to some more complex smartwatches I’ve used, this unit’s focused approach to running means less fiddling and more focus on my training. It has certainly outperformed the budget fitness trackers I’ve tried in the past, offering far more accurate GPS data and a richer set of running metrics.
Breaking Down the Features of Garmin Forerunner 45S Watch
Specifications
The Garmin Forerunner 45S Watch is built around a compact 39 mm case size, with a 26.3 mm diameter display (1.04 inches). This smaller form factor makes it an excellent choice for users with slimmer wrists or those who prefer a less obtrusive device. The fiber-reinforced polymer bezel and silicone band contribute to its remarkably light 36 g weight, ensuring comfort during prolonged wear.
This watch boasts a sunlight-visible, transflective memory-in-pixel (MIP) display with a 208×208 pixel resolution. This technology is key to its excellent outdoor readability, allowing you to see your stats at a glance without straining. The inclusion of built-in GPS is fundamental, providing accurate tracking of distance, pace, and route.
Battery life is rated for up to 7 days in smartwatch mode and up to 13 hours in GPS mode. While the 13 hours in GPS mode is sufficient for most runs and even marathons, longer ultra-marathons might require careful battery management or carrying a power bank. Its 5 ATM water resistance rating means it’s safe for swimming and showering, expanding its utility beyond just running. The watch comes with a charging cable and documentation, with no other significant accessories needed for its core function.
Performance & Functionality
The primary function of the Garmin Forerunner 45S Watch is GPS running tracking, and it excels here. Pace and distance metrics are consistently accurate, aligning closely with my expectations and validated against other devices. The built-in heart rate monitor, while not as precise as a dedicated chest strap for very high-intensity intervals, provides reliable enough data for general training zones and calorie expenditure estimations.
Its strengths lie in its simplicity and dedicated focus on running. It provides essential metrics like pace, distance, cadence, and heart rate clearly on its display. The automatic lap tracking and interval timers are also incredibly useful for structured workouts. A notable weakness, however, is the lack of advanced running dynamics like ground contact time or vertical oscillation, which are found on higher-tier models. Nevertheless, for its intended audience, it meets and often exceeds expectations for core running performance tracking.
Design & Ergonomics
The design of this watch prioritizes comfort and functionality. The 39 mm case size is notably smaller than many competitors, making it ideal for users who don’t want a bulky device on their wrist. The silicone band is soft and flexible, preventing chafing even during long, sweaty runs.
The control scheme, comprised of five physical buttons, is well-laid out and easy to operate even when your hands are cold or slightly damp. The digital display is crisp and clear, and the fiber-reinforced polymer construction feels robust enough to withstand daily wear and tear. While it doesn’t have a touchscreen, which some might miss, the button controls are reliable and less prone to accidental activation during activity.
Durability & Maintenance
Garmin has a reputation for building durable sports watches, and the Garmin Forerunner 45S Watch is no exception. The glass lens appears to be quite resilient against minor scratches, and the fiber-reinforced polymer case has held up perfectly against bumps and scrapes encountered during my testing. I have not experienced any issues with the silicone band degrading or becoming stiff.
Its 5 ATM water resistance means you don’t need to worry about removing it for showers or during rainy runs, which simplifies maintenance. Cleaning is as simple as wiping it down with a damp cloth. There are no user-replaceable parts like batteries or straps without specialized tools, suggesting it’s designed for a lifespan where these components are integrated. It’s a watch built to last through countless miles.
Accessories and Customization Options
The Garmin Forerunner 45S Watch comes with the essentials: a charging cable and user documentation. While it doesn’t come bundled with advanced sensors, its core functionality relies on its built-in GPS and optical heart rate monitor. For those looking to expand its capabilities, it is compatible with ANT+ heart rate monitors and foot pods, allowing for more precise data capture if needed.
Customization is primarily software-based, with a wide array of watch faces, data fields, and activity profiles available through the Garmin Connect app and IQ Store. While you can’t swap out physical components like advanced models, the ability to tailor the on-screen data for each specific running activity is a significant perk. The standard silicone band can be replaced with third-party options if desired, offering a degree of personalization.
Pros and Cons of Garmin Forerunner 45S Watch
Pros
- Excellent GPS accuracy for reliable pace and distance tracking.
- Sunlight-visible display ensures readability in all conditions.
- Comfortable and lightweight design, ideal for smaller wrists or long-duration wear.
- Intuitive interface and button controls, easy to navigate during runs.
- Solid battery life for most running activities, especially in smartwatch mode.
Cons
- Lacks advanced running dynamics found in higher-end models.
- Optical heart rate sensor may not be precise enough for elite interval training.
- The 13-hour GPS battery life might be insufficient for ultra-marathon distances.
Who Should Buy Garmin Forerunner 45S Watch?
This GPS running watch is an ideal choice for beginner to intermediate runners who want accurate tracking and essential running metrics without unnecessary complexity. It’s perfect for those training for their first 5k, 10k, or even a marathon, and who appreciate a device that’s comfortable to wear all day. Individuals with slimmer wrists or a preference for a more compact watch will find its 39 mm case size particularly appealing.
Those who require highly detailed physiological data, such as advanced running dynamics, VO2 Max estimates, or real-time advanced performance analysis, might find themselves better served by Garmin’s higher-tier Forerunner or Fenix lines. If you’re a casual runner who just wants to track your runs accurately and monitor basic health stats, this model is a fantastic option. I’d also recommend pairing it with a dedicated chest strap heart rate monitor if extremely precise heart rate data is a priority for your training.
Conclusion on Garmin Forerunner 45S Watch
The Garmin Forerunner 45S Watch stands out as a highly competent and user-friendly GPS running watch, especially for its target audience. It delivers on its core promise of accurate tracking and essential metrics with a design that prioritizes comfort and readability. The sunlight-visible display and lightweight build make it a joy to wear on every run, from a quick jog around the block to a half-marathon effort.
Considering its $209.49 price point, the value proposition is strong, offering a reliable gateway into serious running metrics from a trusted manufacturer. While it may not boast every cutting-edge feature found on premium models, it provides an excellent foundation for anyone looking to improve their running performance. I would confidently recommend this Garmin Forerunner 45S Watch to any runner seeking a dependable, straightforward, and accurate GPS companion that won’t break the bank.