Bottom line: The COROS PACE 4 was $279 and the Garmin Forerunner 265 was $442 when we checked in July 2026. Both have AMOLED screens. The COROS has dual-frequency GPS, more than double the battery, and weighs 32 grams. The Garmin has none of the first, less of the second, and the one thing COROS cannot match: the ecosystem. That is the entire decision.
Check COROS PACE 4 Price → Check Garmin FR265 Price →
The Numbers
| PACE 4 | Forerunner 265 | |
|---|---|---|
| Price | $279 | $442 |
| Display | 1.2in AMOLED | AMOLED, 46mm case |
| Continuous GPS | 41 hours | 20 hours |
| Daily battery | Up to 19 days | Up to 13 days |
| Dual-frequency GPS | Yes | No |
| Weight | 32g (nylon band) | Heavier, 46mm case |
| Thickness | 11.8mm | Thicker |
| Subscription | None | None |
Read that and the pattern is hard to miss. The watch costing $163 less wins on GPS hardware, battery, and weight. This is the third comparison on this site where the FR265 loses on specifications to something cheaper, after the Polar Vantage M3 and the PACE 3. At some point that stops being a coincidence and starts being the shape of the market.
Dual-Frequency GPS, and Why It Is the Real Gap
The PACE 4 receives two satellite frequency bands. The FR265 receives one. When a signal bounces off glass or concrete before reaching your wrist, the two bands distort differently, so a dual-frequency watch can identify the reflection and throw it out. A single-band watch has no way to tell a bounced signal from a clean one.
In practice that is the difference between splits you can train from and splits you argue with, and it only shows up in specific places: streets with tall buildings on both sides, and trails under heavy canopy. On open roads and a track you will never see it, and Garmin’s positioning is perfectly good there.
Here is the free way to find out which camp you are in. Run your usual route with any GPS device you own, including your phone, then look at the map afterwards. If the line follows the road, single-band is fine for where you run. If it cuts through buildings and wanders into the river, you have found a real reason to care.
Battery: Twice the Watch
COROS rates the PACE 4 at 41 hours of continuous GPS and up to 19 days of daily use. Garmin rates the FR265 at 20 hours and 13 days. That is roughly double on the GPS figure.
For a marathon neither watch is at risk. The gap matters for ultras, multi-day efforts, and for the ordinary annoyance of charging. It is also worth knowing that COROS achieves this with a 32 gram watch that is 11.8mm thick, so you are not trading bulk for endurance, which is the usual bargain.
What Garmin Actually Sells You
Not specifications. The Forerunner 265 is worth $163 more than the PACE 4 for exactly one reason, and it is a good one: Garmin Connect and everything attached to it.
That means free access to the most complete training platform any watch maker runs, integrations with nearly every app and device in the category, morning report, HRV status, training readiness, Garmin Coach adaptive plans, and daily suggested workouts that adjust after each run. It also means on-device music and Garmin Pay, neither of which COROS matches.
If your bike computer is a Garmin, your coach writes plans in Connect, or your gym app expects a Garmin feed, that gravity is real and it is the honest reason to pay. COROS Training Hub is capable and considerably smaller. Our Forerunner 265 review covers the platform in full.
Where Both Watches Hit the Same Wall
Wrist optical heart rate is good at rest and steady efforts and degrades as intensity rises, identically on both, because it is the same underlying technology reading blood flow through a moving wrist. In the Stanford validation of seven wearables (Journal of Personalized Medicine, 2017), no device met the researchers’ 5 percent accuracy threshold for energy expenditure, with the most accurate off by more than 27 percent.
The practical consequence is the same whichever you buy: use the trend rather than the absolute number, and if you train by heart rate zones, pair it with a chest strap. That is the real accuracy upgrade at either price, and it costs about $100. Our guide to the validation research goes study by study and our heart rate monitor roundup covers the fix.
How We Evaluate
We do not train with either watch and we will not imply we do. Specifications come from COROS’s and Garmin’s own Amazon listings, checked in July 2026, including the 41-hour GPS and 19-day battery figures, 32g weight, 11.8mm thickness and AMOLED display for the PACE 4, and the 20-hour and 13-day figures for the FR265. Prices were read live on the same date and both brands discount frequently. The explanation of how dual-frequency positioning works reflects established physics rather than marketing. Accuracy figures come from the named Stanford study, linked above. Recommendations are our judgment, labelled as such.
Who Should Buy Which
Buy the COROS PACE 4 if you run in cities or on trails where GPS accuracy is a real problem, if you want the longest battery in this class, if light weight matters for long runs and overnight wear, or if $163 is better spent on shoes and race entries. This is our pick for most runners.
Buy the Forerunner 265 if you already own Garmin gear, want music without a phone, or will genuinely use adaptive coaching. Those are legitimate and the ecosystem argument strengthens the more Garmin you own.
Look at the cheaper COROS if the AMOLED screen is not a priority. The PACE 3 has the same dual-frequency GPS and longer daily battery for $199, which we covered in our PACE 4 versus PACE 3 breakdown. And if you are choosing within Garmin instead, our FR165 versus FR265 comparison and running watch roundup cover that side. Neither watch here charges a subscription, unlike the recovery devices in our three-year cost breakdown.
Check COROS PACE 4 Price → Check Garmin FR265 Price →
The Pattern Worth Noticing
Three comparisons on this site now put the Forerunner 265 against a cheaper watch, and it loses the specification argument every time. Polar’s Vantage M3 has dual-frequency GPS and offline maps. The COROS PACE 3 has dual-frequency GPS and better battery for $199. The PACE 4 has both plus an AMOLED screen for $279. That is not three flukes.
What it reflects is that hardware has commoditised. AMOLED panels, dual-band GPS chipsets and optical sensors are available to any manufacturer willing to buy them, so matching a competitor’s sensor list is now a sourcing decision rather than an engineering achievement. Software has not commoditised. Garmin spent two decades building Connect, the training algorithms inside it, and the integration web that lets your watch talk to everything else you own. That cannot be bought from a supplier.
So the honest framing is not cheap watch versus good watch. It is paying for sensors versus paying for software. If you want measurement, the cheaper watches win outright and it is not close. If you want a platform that will still be developing in five years and that talks to everything, that argument runs the other way, and the premium is real rather than brand tax.
Worth adding one practical note: established platforms also hold resale value better and receive firmware updates for longer. A budget watch that saves you $163 today is still the cheaper option after three years, but the gap narrows more than the sticker prices suggest.
FAQ
Is the COROS PACE 4 better than the Garmin Forerunner 265?
On hardware, clearly. It has dual-frequency GPS the Garmin lacks, roughly double the battery, weighs less, and costs $163 less. The Garmin wins on ecosystem breadth, third-party integrations, on-device music and adaptive coaching.
Does the Garmin Forerunner 265 have dual-frequency GPS?
No. It uses single-band positioning, which is accurate on open roads and tracks but more prone to drift between tall buildings and under dense tree cover. Several cheaper watches, including the PACE 4 and PACE 3, include dual-frequency reception.
Which has better battery life?
The PACE 4, by roughly double on GPS. COROS rates it at 41 hours continuous GPS and up to 19 days daily use, against 20 hours and 13 days for the FR265.
Is the Garmin ecosystem worth $163 more?
It depends how much Garmin you own and whether you will use adaptive coaching. Garmin Connect is free and integrates far more widely than COROS Training Hub. For a runner with no other Garmin devices who just wants accurate data, it is hard to justify.
Do either of these require a subscription?
No. Both COROS and Garmin provide their training platforms free, unlike WHOOP and Oura which bundle or require ongoing memberships. That makes both considerably cheaper over three years than the sticker prices suggest.