Garmin vs Apple Watch: The Athlete's Dilemma
I've worn a smartwatch on every run since 2019, and I've got the spreadsheet to prove it. Eight thousand miles, four cheap watches, one accidental creek dunking at mile 22, and a whole lot of opinions about which ones lie to you. Today I'm answering the question I get asked most by runners who see my setup: should you spend $400 on a Garmin or $400 on an Apple Watch? Spoiler: the answer depends on whether you want a training partner or a phone on your wrist, and I've got strong feelings about both.
Why You Should Trust Me
I'm Eli. I work at a garden center forty hours a week, I train for marathons on top of that, and I've been reviewing budget wearables for seven years. I test every watch the same way: two weeks of daily wear, GPS accuracy against a marked 5-mile course I've run hundreds of times, heart rate compared to my chest strap, and a battery audit from full charge to dead. My dog Gus has napped on more watches than I can count, which is honestly a solid comfort test.
How I Picked
My criteria are simple. Does the GPS match my known course? Does the heart rate match my chest strap within a few beats? Does the battery survive a full day of wear plus a night of sleep tracking? Would I trust it through a marathon training cycle? I also checked buyer reports across both platforms, looking for patterns in battery degradation and sensor drift. I don't care about pixel density or processor specs. I care about whether the watch tells the truth.
How I Tested
I wore each watch for two full weeks. I ran my 5-mile course three times with each one, compared heart rate data against my Polar chest strap during intervals, and tracked battery percentage every morning when I plugged it in during my shower. I also wore both while working at the garden center, which means they got splashed, banged against pots, and covered in soil. Gus sat on both of them. One survived. The other he rolled off the couch onto, and I'll get to that.
Our pick: Garmin Forerunner (B0CT3SGHXL)
The Garmin is the watch I'd wear if I could only own one. I borrowed my friend's for a month and ran my known 5-mile course with it three times. It said 5.02, 4.98, and 5.01. That's within a rounding error of the truth, and after years of watching cheap watches tell me I ran 5.4 miles when I didn't, that accuracy feels like a gift. The heart rate tracked within two beats of my chest strap during tempo runs, which is the difference between training in the right zone and training in the wrong one.
The battery is the headline. I wore it for a full day and night, tracked a run, slept with it on, and it still showed 82% the next morning. My cheap watches need a shower charge every day just to survive. This thing goes a week. I plugged it in once on day six because I forgot it had been that long. That's the dream.
The screen is readable outside, which sounds like a low bar but apparently isn't. I've squinted at more than one budget watch in direct sunlight. The Garmin just works. It's also comfortable enough that I forgot I was wearing it during a 20-mile long run, which is more than I can say for any of my cheap watches with their sweaty silicone bands.
Flaws but not dealbreakers
The Garmin app takes some getting used to. It's dense, and it shows me things like aerobic training effect that I have no clue what means. I'm a practical person, not a data scientist. But once I found the daily summary screen, everything I actually needed was right there. And yeah, it's $400. That's real money. But you could buy four of my cheap watches for that price and still not get the GPS accuracy this thing delivers on every single run.
This is for runners who want to trust their data without thinking about it. If you're training for a marathon and you need to know your splits were real, this is the watch.
Upgrade pick: Apple Watch (B0FQF5BZ8Z)
I wore the Apple Watch for two weeks and I get why people love it. The screen is gorgeous, the interface is smooth, and it does things my cheap watches can't dream of. I took a call while watering plants and my mom asked if I'd gotten a new phone. I told her it was the watch and she didn't believe me.
But here's the thing about the Apple Watch for athletes: the battery. I charged it every single night. If I forgot, it was dead by noon the next day. I went on a long run with it at 40% and it died at mile 8. That's not a training tool, that's a phone on your wrist that happens to track runs.
The GPS was solid, I'll give it that. It said 5.04 on my known course, which is close enough that I'd trust it for most runs. The heart rate tracked within three beats of my chest strap during steady efforts, though it lagged during intervals. It's not a liar, it's just not as precise as the Garmin.
The step tracking is where I almost threw it across the room. I work at a garden center, I'm on my feet constantly, and the Apple Watch undercounted my steps by about 20% every day. My cheap watches sometimes overcount. This one silently ignored thousands of steps. That's a dealbreaker for someone who's on their feet 10,000 steps before training even starts.
Flaws but not dealbreakers
The Apple Watch is a great smartwatch that runs. It's not a great running watch that does smartwatch things. If you want notifications, apps, and a beautiful screen, this is your pick. Just be prepared to charge it every night, and don't trust the step count. I'd still take it on a run, but I'd bring my phone for backup.
This is for athletes who want their watch to do everything except tell the truth about their step count. If you're more phone person than runner, this will serve you fine.
The Competition
I looked at a few other options in this space. The MorePro (B0GJSXGKG8) is my budget favorite at around $25, and it's honestly impressive for the price. The GPS said 5.3 on my known course, which is a 6% error, and the heart rate ran about eight beats high during intervals. Not terrible for less than the cost of dinner, but not something I'd trust for race pace work. The step counter worked for about two months and then silently stopped, which is the same pattern I've seen in every budget watch I've owned. I've bought four of these things and three of them died the same way. For $17, WOW, but you get what you get.
The Garmin and Apple Watch are the real contenders here, and they're not really competing for the same buyer. The Garmin is a training tool that happens to show notifications. The Apple Watch is a phone extension that happens to track runs. If you're a marathon runner who needs accurate data, the Garmin wins by a mile. If you're a casual athlete who wants a smartwatch that can also track a 5K, the Apple Watch is fine, just charge it every night.
I also considered the budget Garmins, but the Forerunner is the sweet spot for serious training. The cheaper models have the same GPS accuracy but smaller screens and worse battery life. The most expensive models add features I don't need, like music storage and contactless payments. If I wanted that, I'd buy an Apple Watch. At $400, the Forerunner does exactly what I need and nothing I don't.
The bottom line
Here's what I tell people who ask me about the Garmin vs Apple Watch debate. If you're training for something, buy the Garmin. The GPS accuracy is worth every penny, the battery lasts a week, and it tells the truth about your heart rate. If you just want a smartwatch that can track your morning jog, buy the Apple Watch. Just know you'll be charging it every night and the step count is a suggestion, not a fact.
For $400, the Garmin is the best training investment I've seen in seven years of testing. I ran my known course with it and it told me the truth. That's the review. [Check price on Amazon]