Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Coros - PACE 3 | Garmin - Forerunner 965 |
|---|---|---|
| Smartwatch mode | 17 days | 23 days |
| GPS mode | 38 h | 31 h |
Between the PACE 3 and Forerunner 965, the PACE 3 comes out ahead in gps mode, while the Forerunner 965 wins on smartwatch mode. Overall, the PACE 3 scores 71.4 and the Forerunner 965 scores 71.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (71.4 vs 71.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the PACE 3 if you care most about gps mode. The biggest gaps in its favor are gps mode. The single most decisive one: GPS mode — 22.58% more. 38 h vs 31 h.
Pick the Forerunner 965 if you care most about smartwatch mode. Its strongest claims are smartwatch mode. The single most decisive one: Smartwatch mode — 35.29% more. 23 days vs 17 days.
Both ship with comparable multi-band gps, solar charging, ecg, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Coros - PACE 3 or Garmin - Forerunner 965?
Coros - PACE 3 leads the current Mars Score by 0.1 points.The more useful decision is the trade-off behind that result: compare smartwatch mode, gps mode against the way you will actually use the product.
Choose Coros - PACE 3 if…
Coros - PACE 3 has the measurable edge on battery gps hours.
Choose Garmin - Forerunner 965 if…
Garmin - Forerunner 965 has the measurable edge on battery smartwatch days.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Coros - PACE 3 wins
- ▲GPS mode — 22.58% more. 38 h vs 31 h.
Why Garmin - Forerunner 965 wins
- ▲Smartwatch mode — 35.29% more. 23 days vs 17 days.
Spec comparison
GPS & Sensors
| Spec | Coros - PACE 3 | Garmin - Forerunner 965 |
|---|---|---|
| Multi-band GPS | true | true |
| Barometric altimeter | true | true |
| Heart rate | true | true |
| ECG | false | false |
| Pulse Ox | true | true |
Battery
| Spec | Coros - PACE 3 | Garmin - Forerunner 965 |
|---|---|---|
| Smartwatch mode | 17 days | 23 dayslead |
| GPS mode | 38 hlead | 31 h |
| Solar charging | false | false |
Design
| Spec | Coros - PACE 3 | Garmin - Forerunner 965 |
|---|---|---|
| Case size | 42 mm | 47 mmlead |
| Weight | 39 glead | 53 g |
| Water resistanceⓘ | 5 ATM | 5 ATM |