COROS PACE 4 Review: Best Value GPS Running Watch

The COROS PACE 4 launched on December 7, 2025 — and it’s already turning heads among serious runners who want a capable GPS running watch without breaking the bank.

I’ve been a COROS user since the PACE Pro was released, and the combination of the watch hardware, COROS app, and Training Hub has genuinely impressed me. When I got the chance to use the PACE 4 in actual road races, I put it through a thorough test to bring you this honest hands-on review.

This review covers how the PACE 4 compares to the PACE 3 and PACE Pro — and helps you decide whether it’s worth buying, whether you’re coming from another COROS model or a different brand entirely.

COROS PACE 4: Product Overview

Item	Details
Product Name	COROS PACE 4
Manufacturer	COROS
Price	Check the COROS official website for current pricing in your region
Screen Size	1.2 inch
Resolution	390 × 390 pixel
Weight	Nylon Band: 32 g Silicone Band: 40 g
Battery Life	Full-system mode: 31 hours

The PACE 4 comes with a silicone band as standard, though the nylon band option may become available to order separately. As of January 2026, the nylon band was listed as sold out.

With the nylon band, the watch plus band combination weighs just 32g — light enough that you’ll forget you’re wearing it.

The 22mm nylon band is compatible not just with the PACE 4, but also with the PACE 3, PACE Pro, APEX 4 (42mm), APEX Pro, and APEX 2 Pro — a welcome touch for COROS users with multiple devices.

I also received the Josai University collaboration nylon band — the Ekiden Edition — at the same time. It’s a limited-edition design tied to the Hakone Ekiden relay race.

Where the PACE 4 Fits in the COROS Lineup

The PACE 4 is the latest model in COROS’s PACE series.

The PACE series is designed for speed- and performance-focused athletes — runners, cyclists, and triathletes — balancing light weight, ease of use, and high performance in a single package.

Beyond the PACE series, COROS also offers the NOMAD, APEX, and VERTIX lines, each targeting a different type of athlete.

PACE	NOMAD	APEX	VERTIX
Built for runners, cyclists, and triathletes who prioritize speed and performance — combines light weight, ease of use, and high capability	Purpose-built for outdoor adventure activities like fishing, hiking, and camping	For trail runners, climbers, and skiers who need both durability and speed — tough, lightweight, with extended battery life	High-grade performance with monster-level battery life for ultra marathons, multi-day mountain traverses, and alpine climbing

COROS PACE 4: My Hands-On Review

I switched from a GARMIN running watch to the COROS PACE Pro in 2024, and I’ve been a COROS user ever since. The watch hardware is excellent, and the COROS app and Training Hub have consistently impressed me with their depth and responsiveness to user feedback.

I cover the COROS app, Training Hub, POD 2 integration, and optical heart rate sensor pairing in my PACE Pro review — check that out if you want a deeper look at the COROS ecosystem.

I wore the COROS PACE 4 in actual road races, and the experience was nearly identical to the PACE Pro — no learning curve, no adjustment period.

Here’s what makes the PACE 4 stand out on its own.

Vivid AMOLED Display

The biggest upgrade from the PACE 3 to the PACE 4 is the display. The PACE 4 uses the latest AMOLED technology, and it’s strikingly sharp — the kind of clarity that makes you appreciate it every time you glance at your wrist mid-run.

The spec sheet shows a slightly lower resolution than the PACE Pro, but in practice the difference is invisible to the naked eye.

A comparable GPS running watch from another major brand with the same AMOLED display technology would run you $300 or more. The PACE 4’s price-to-performance ratio here is hard to argue with.

All the Features You Need, Nothing You Don’t

The PACE 4 strikes the right balance between having everything a runner needs and staying genuinely light and minimal. The slim profile means it never catches on clothing or gets in the way during a race.

Surprisingly Comfortable Silicone Band

With the PACE Pro, I used the nylon band because the silicone band would occasionally snag during sleep. The PACE 4 is built with more of a minimalist profile, and that change makes a real difference — the silicone band is comfortable enough to wear overnight without any irritation.

That said, the nylon band still wins on feel. It molds to your wrist in a way that makes the watch seem to disappear. The trade-off is maintenance: nylon needs to be washed and dried after sweaty runs, and after extended use the velcro adhesion can start to weaken. After about a year of use, my PACE Pro nylon band started detaching during sleep — which disrupts sleep data accuracy.

Voice Recording Feature

After a run, you can now leave a voice note directly on the watch. Training insights are sharpest right after a workout — this feature captures them before they fade.

The voice recording is available after finishing a run, when you scroll through your activity data to log your perceived exertion. You can record a note at that same moment.

I tested it by recording a quick post-run note. The speech-to-text transcription was nearly perfect — impressive accuracy, with only one minor character conversion error. And the audio playback quality was clear.

Any transcription errors can be corrected using the pencil icon in the app. The accuracy is good enough that editing is rarely necessary, but the option to keep clean records is a nice touch.

Action Button

The PACE 4 adds a dedicated action button on the lower-left side of the watch. In daily mode, pressing it turns on the backlight. During an activity, its function is fully customizable — through the watch itself or via the COROS app.

In practice, the action button simply means one additional assignable button during activities. Both the lower-left and lower-right buttons can each be set to one of the following functions:

Honestly, for competitive racing I’d only ever use the lap function — so the assignable options feel a bit limited. But having a dedicated lap button without navigating through menus is a genuine quality-of-life win during races.

Standout Features Worth Noting

These are the features I’m most impressed by — some PACE 4-specific, others shared across the COROS ecosystem.

Outstanding Value for the Price

When you factor in the AMOLED display, GPS accuracy, and overall feature set, the PACE 4 offers exceptional value. Comparable GPS running watches from other major brands with the same display technology start at $300 or more. COROS’s pricing feels genuinely fair.

And it’s not just the hardware. The COROS app and Training Hub are strong tools that show COROS is actively listening to its user community — with fast update cycles that keep pace with runner feedback.

HRV Sleep Tracking That Delivers

I noticed this with the PACE Pro too: COROS’s HRV status measurement feels genuinely accurate. Whether it’s the raw sensor precision or the underlying algorithm, the results consistently reflect how I actually feel — which is exactly what you want from HRV tracking.

The Nylon Band Comfort Is Hard to Beat

The Josai University Ekiden Edition nylon band — like any COROS nylon band — conforms to your wrist in a way the silicone band simply can’t match. It fits so naturally that you genuinely forget it’s there.

The 22mm nylon band is cross-compatible with the PACE 3, PACE Pro, and PACE 4. Standard colors like black are available year-round; the Josai University collaboration band is limited edition.

COROS PACE 4 vs. PACE Pro: Real-World Differences

Having used both watches, here are the real-world differences I actually noticed.

Size and Form Factor

The PACE Pro feels bulkier than the PACE 4, though the display size difference is only 0.1 inch — side by side, they look surprisingly similar.

The PACE Pro is also slightly thicker, though not dramatically so.

The key structural difference is the band connection. The PACE Pro has a fixed silicone band attachment, while the PACE 4’s band connector moves freely. This makes the PACE 4 a better fit for runners with narrower wrists.

No ECG Sensor — Does It Affect Heart Rate Accuracy?

One detail that often gets overlooked: the PACE Pro includes an ECG sensor, and the PACE 4 does not. An ECG sensor (electrocardiogram sensor) detects and records the tiny electrical signals generated by the heart — giving it a measurable edge in precision heart rate measurement over standard optical sensors.

During runs, I use an optical heart rate sensor worn on the arm, so the difference between the two watches doesn’t show up in training data. But for overnight sleep HR and HRV status measurement, the ECG sensor in the PACE Pro likely provides higher accuracy.

Honestly, I didn’t realize the PACE Pro had an ECG sensor until I got the PACE 4. Looking back, the sleep data from the PACE Pro did consistently feel more accurate. Here’s a direct comparison.

Sleep heart rate data from the PACE Pro:

Sleep heart rate data from the PACE 4:

The PACE 4 data shows noticeably more noise. The difference in sleep HR measurement accuracy appears to be real.

PACE Pro Has the Map Feature

The PACE Pro includes on-device map navigation. The PACE 4 does not.

I rarely use the map feature myself, so it’s hard for me to evaluate it directly. But if you do trail running or frequently run in unfamiliar cities, the PACE Pro’s map capability may be a deciding factor.

Should You Buy the COROS PACE 4?

Whether the PACE 4 is the right buy comes down to how many of these situations apply to you. Here are the reasons to choose the PACE 4 over the PACE 3 or PACE Pro.

If you’re a PACE 3 user who’s already happy with GPS performance and display quality, the upgrade case is fairly weak. But the display leap is dramatic, and the additional features are meaningful — if you’re intrigued by what’s new, it’s a product worth buying.

If you’re deciding between the PACE Pro and PACE 4, the key factors are: map navigation, the overall bulk of the watch, storage capacity, and whether ECG sensor-based heart rate accuracy matters to you for sleep tracking.

Personally, if I had to choose one, I’d go with the PACE Pro. The price difference exists, but a running watch is a multi-year investment — and over that timeframe, the gap feels worth it.

Where to Buy the COROS PACE 4

The COROS PACE 4 is available through authorized retailers and online.

You can also purchase online directly from the COROS official website or through Amazon.