COROS Pace 3 vs Polar Vantage V3: Which GPS Watch Wins?

Overview

The COROS Pace 3 and Polar Vantage V3 both target serious endurance athletes who train with data, but they occupy opposite ends of the price spectrum. The Pace 3 at roughly €199 delivers multi-band GPS accuracy and featherweight construction for budget-conscious runners. The Vantage V3 at $599 adds an AMOLED display, skin temperature sensing, continuous SpO2 logging, and deeper recovery analytics for athletes who want a full physiological picture.

Specs at a glance

Price: COROS Pace 3 ~€199 vs Polar Vantage V3 ~$599
Weight: Pace 3 at 30g vs Vantage V3 at 55g
GPS battery: Pace 3 up to 38h standard GPS, 20h multi-band vs Vantage V3 up to 43h GPS with optical HR active
Power-save GPS: Pace 3 not specified vs Vantage V3 up to 140h
Display: Pace 3 MIP transflective always-on vs Vantage V3 1.39-inch AMOLED with always-on option
Skin temperature sensor: Pace 3 no vs Vantage V3 yes
Water resistance: Pace 3 50m (5 ATM) vs Vantage V3 100m (10 ATM)
SpO2: Both include pulse oximetry; Vantage V3 adds nightly continuous logging

GPS and tracking accuracy

Both watches use multi-band, multi-constellation GNSS and both deliver tight track-following in conditions where single-band watches drift. The Pace 3 holds its line on forest trail switchbacks and urban canyons, with recorded routes showing clean geometry on tight loops. The Vantage V3 matches that standard and in back-to-back testing against a Garmin Fenix 7 Pro, distance deltas stayed under 0.05 miles over a 10-mile effort. Pace data during intervals is responsive on the Vantage V3, with lag under two seconds.

At this level, GPS accuracy is effectively a draw. Both watches are reliable enough that course distance and split data can be trusted in races. Neither has a meaningful edge here for most athletes.

Battery life

The Pace 3 offers 38h in standard GPS mode and drops to 20h in full multi-band mode, which is the mode that delivers its best accuracy. The Vantage V3 provides 43h in GPS mode with optical HR running, and stretches to 140h in power-save GPS mode. For ultramarathon efforts beyond 20h where you want full multi-band precision, the Vantage V3 has a clear advantage. For events under 38h, the Pace 3 holds up fine. The Pace 3 also claims 30 days in daily watch mode, which edges out the Vantage V3's approximately 7 days in smartwatch mode for everyday wearers who charge infrequently.

For athletes: who wins?

Road and track running: Pace 3. At 30g it is essentially unnoticeable on the wrist during tempo work and races. The multi-band GPS is accurate enough to trust splits. No reason to pay three times as much for this use case.
Trail and ultra running: Vantage V3. The 43h multi-band GPS battery outlasts the Pace 3's 20h multi-band ceiling, and 140h power-save mode covers the longest events. Skin temperature adds a heat-stress data point the Pace 3 cannot provide.
Triathlon: Vantage V3. The 100m water resistance handles open-water swimming and rough conditions more confidently than the Pace 3's 50m rating. The richer sensor suite and recovery analytics suit the multi-discipline training load.
Recovery monitoring: Vantage V3. Continuous nightly SpO2 logging, skin temperature, and Polar's established recovery tools give coaches and self-coached athletes more actionable data. The Pace 3 covers HRV and optical HR but lacks the depth.

Verdict

If your budget is under €250 and you primarily run or do single-sport endurance events under 20 hours, buy the Pace 3. It is one of the best-value multi-band GPS watches available and its 30g weight is a genuine advantage over every heavier option. If you train across multiple disciplines, need battery life for ultra-distance efforts in full accuracy mode, or rely on layered recovery data to structure your training, the Vantage V3 justifies its price. The three-times cost difference is only worth it if you will actually use what the Vantage V3 offers. Most runners will not. Triathletes and ultrarunners who live in their recovery metrics will.