Wear Radar

COROS ApexvsPolar Grit X

COROS Apex
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Trail runners, ultramarathon athletes, and multisport competitors who want full maps and long GPS battery without paying $900 for the Vertix. A strong alternative to Garmin Forerunner 965 for users who prioritise battery over display quality.

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Polar Grit X
Buy/Wait:bad

Overdue for a refresh — no successor announced yet. Prices should be at their lowest

Best for: Trail runners, hikers, and outdoor athletes who want Polar's analytics with significantly longer battery life than the Vantage V3. The titanium case and sapphire glass make it suitable for technical terrain where watch durability matters.

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COROS ApexPolar Grit X
TierSports GPSSports GPS
PlatformiOS & AndroidiOS & Android
Battery45 days40 days
Always-on display
GPS
Cellular
Health sensorshr, spo2, hrv, training load, skin temphr, spo2, hrv, running power
ReleasedSep 14, 2022Mar 14, 2023
Cycle length1047 days873 days
Cycle advicebadbad
Deals advicegoodgood
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Why buy each?

COROS Apex

75 hours GPS, 45 days typical

Enough for 3-day mountain stages without charging — a critical advantage for ultra-distance racing.

Full topographic maps

Breadcrumb + full TopoActive-style maps for turn-by-turn navigation on trails, mountains, and roads.

Titanium case and sapphire glass

Lightweight yet scratch-resistant materials that hold up better than most competitor watches at this price.

Polar Grit X

40-day battery for trail and ultra runners

Five times the battery of the Vantage V3 — enough for week-long mountain stages or ultramarathons without charging access.

Hill splitter auto-detection

Automatically segments your run by uphill and downhill sections, calculating pace and power for each — essential for mountain race training.

Wrist running power at mid-range price

Running power without a chest strap or foot pod — Polar's key differentiator versus Garmin at this price tier.