Garmin Forerunner 570 vs 970: What the Extra Money Actually Buys

The short answer

Garmin's premium Forerunner pair is unusually hard to separate, because almost everything a runner trains with is on both spec sheets. That is the first thing to understand, and it is the opposite of how these watches get sold: the 570 is not a cut-down 970 with features missing from the training side. It is the same training watch in a smaller, lighter body with a shorter battery and no maps.

So the question is not “which watch has the features.” It is whether four extra metrics, a map, a flashlight, an ECG app, a sapphire lens and eight more hours of GPS tracking are worth the price gap and 14 extra grams. For most runners training for a half or a full marathon, the answer is no — which is why the 570 is our pick here. For a specific kind of runner, mostly one who runs unfamiliar routes or trains over very long distances, the answer is yes.

What is identical

These rows appear on Garmin's spec tables for both the Forerunner 570 and the Forerunner 970, so nobody should pay the gap expecting any of them:

• Training readiness and training status (Garmin marks both as “improved” and both list unified training status).
• Lactate threshold, running power and recovery time — the three figures a structured training block actually runs on.
• VO2 max for both road and trail running, plus PacePro pacing strategies for a goal-paced race.
• Garmin triathlon coach and on-screen workout muscle maps.
• Multi-band GPS with SatIQ, music storage, a built-in speaker and microphone, Garmin Pay, Wi-Fi and a 5 ATM water rating.
• An AMOLED touchscreen with an optional always-on mode, and a barometric altimeter.

That list is the whole engine of a marathon build. If you came here wondering whether the cheaper watch can run Garmin's coaching plans and give you readiness and power, it can.

What the 970 actually adds

Here is the complete set of rows the 970 lists and the 570 does not:

Two notes on that table that matter more than they look. First, running economy is listed by Garmin as “yes (with compatible accessory)” — so it is not a feature you get out of the box on the 970 either. Second, the ECG app is a health feature rather than a running one, and it should not be in a decision about which running watch to buy.

Size and weight: 42 g vs 56 g

This is the row that should decide it for more people than it does. The 570 comes in two cases; the 970 comes in one.

Garmin fits the 42 mm Forerunner 570 to wrists from 115 mm. The 970 starts at 135 mm. If your wrist is under 135 mm around, the comparison on this page has already ended: the 570 in 42 mm is the watch, and no feature list changes that. A watch that slides around is a watch with a worse optical heart rate reading, which undermines every metric either model computes.

At the other end, the 970 is 56 g against the 42 mm 570's 42 g — a third more weight, in the same 12.9 mm thickness. On a 20-mile long run that is noticeable, and it is one of the few differences here you feel rather than read.

Battery, and the awkward 965 problem

The 970 wins the straight fight: up to 26 hours of GPS-only tracking and up to 15 days as a smartwatch, against the 570's 18 hours and 10 days (11 on the 47 mm). For a marathon that is not a decider — the longest sensible long run is four hours and nobody is charging mid-block — but for a runner who forgets to charge things, eight extra hours of headroom is real.

Here is the awkward part. Garmin still sells the Forerunner 965, the previous flagship, and its spec sheet lists up to 31 hours GPS-only and up to 23 days as a smartwatch — more than the 970 on both, with preloaded road and trail maps and the same 32 GB. What the 965 gives up is the newest metrics (no running tolerance, no realtime stamina), the LED flashlight and the speaker and microphone.

So the honest shape of this decision is a three-way, not a two-way: the 570 for weight and size, the 970 for the newest feature set, the 965 for battery and maps at less money. Our best GPS watch for marathon training page ranks the full field on exactly these figures.

Specs side by side

Every row above is from Garmin's own published spec tables, checked on its product pages. We do not test watches and we do not reprint battery figures from third-party testing: Garmin's numbers are the maker's claims, and real-world GPS battery depends on the GNSS mode, the display setting and whether you are playing music.

Are the four extra metrics worth it?

Endurance score, hill score, running tolerance and realtime stamina are the 970's real pitch, so they deserve an honest look rather than a feature-count.

• Realtime stamina is the most defensible of the four for a racer. Garmin describes it as data to help guide you toward your best possible performance, and the use case — not blowing up at 18 miles — is a genuine one.
• Running tolerance tells you how much running load your body is absorbing. If you are already reading training readiness and recovery time on either watch, this is a finer-grained version of a thing you can already see.
• Hill score matters if you train and race on hills, and is close to noise if you run flat roads.
• Endurance score is a long-horizon trend number. It is interesting. It is not something you act on in a given week.

The pattern: one of the four changes race-day decisions, one refines something you already have, and two are mostly data. If maps are not a reason for you, these four alone are a thin case for the upgrade — and the map is the feature on the 970 that most clearly does something the 570 cannot.

Level by level

This site picks gear by pace and weekly mileage, so here is the honest sort.

• Couch to 5K and first 10K. Neither of these. Both watches are far more than a new runner needs, and the money is better spent on shoes. Start at our best running watch for beginners, or at best running watch under $200 if you want a ceiling.
• Half marathon. The Forerunner 570, in whichever case fits. Hal Higdon's Novice 1 Half runs 12 weeks to a 10-mile long run, and training readiness, lactate threshold and PacePro — all on the 570 — cover every decision in it.
• Marathon. Still the 570 for most people. Higdon's Novice 1 Marathon is 18 weeks to a 20-mile long run; the 570's 18 hours of GPS-only battery covers a four-hour long run four times over. Move to the 970 if you run unfamiliar long routes and want the map, or if realtime stamina on race day is worth the gap to you. Pair either with the rotation in our marathon training mileage and shoe rotation guide.
• Trail or ultra-distance. This is where the 970 stops being a luxury: maps, hill score and the longer battery all point the same way. Both watches list VO2 max for trail running.

The two watches to buy instead

• Garmin Forerunner 965. The previous flagship, still sold: up to 31 hours GPS-only, up to 23 days smartwatch, preloaded maps, 32 GB, titanium bezel. No flashlight, no speaker or mic, none of the newest metrics, and the biggest case here at 47.2 x 13.2 mm.
• COROS Pace 4. If battery and weight are the only things you care about, this is the outlier: COROS lists up to 41 hours with all systems on, up to 31 hours in all-systems dual-frequency, and 32 g on the nylon band, with downloadable global maps. The trade is a mineral glass lens, no contactless payment on the spec list, and no Garmin coaching ecosystem — see Garmin vs COROS for the whole argument.

If you are coming from further down the Garmin range, Garmin Forerunner 165 vs 265 covers the rung below this one, and running watch vs Apple Watch covers the question of whether you need a dedicated running watch at all.

Who should buy which

Buy the Forerunner 570 if: your wrist is under 135 mm and you need the 42 mm case; you want the lighter watch at 42 g; you train for road halves and marathons and will use training readiness, lactate threshold, running power and PacePro — all of which it has; or you simply do not want to pay for a map you will not open.

Buy the Forerunner 970 if: you run unfamiliar routes and want on-watch maps; you want realtime stamina for race-day pacing decisions; you train on hills or on trail and want hill score and the longer battery; or you want the sapphire lens and titanium bezel and know that is what you are paying for.