Best Smartwatch for Running: GPS Accuracy, Tested
Well, the Garmin Forerunner is advertised as the ultimate runner’s watch, but is it really worth four hundred of my dollars? I’ve been wearing one for the last eight months alongside my usual budget batch, and I’ve got some thoughts. The short version? It’s the most accurate watch I’ve ever tested, but I still reach for my $25 watches when I’m just heading to the garden center.
I’m Eli. I’ve logged over 8,000 miles since 2019, and I’ve worn a smartwatch for every single one of them. I test these things by wearing them while I water plants, run intervals, and sleep. I compare the GPS to a 5-mile course I’ve run a hundred times, and I check the heart rate against my chest strap. I keep a spreadsheet of which watches lie. Some lie a lot. Here’s the truth about the ones that don't.
The $400 Gorilla in the Room (B0CT3SGHXL)
Let’s just get this out of the way. The Garmin Forerunner is the watch my friend won’t shut up about, and honestly, he’s got a point. The version I own is the B0CT3SGHXL, and the GPS is scary good. I ran my known 5-mile course, the one with the markers I’ve hit hundreds of times, and it said 5.02 miles. That is basically perfect. My chest strap said my average heart rate was 158, and the watch said 159. That’s a one-beat error. My budget watches are usually off by 5 to 10 beats, sometimes more. For zone training, that difference is huge. A 4-beat error can put you in the wrong zone entirely, and this thing just doesn't make that mistake.
But here’s the thing. It’s $400. I bought this one used from a friend who upgraded, and I still felt guilty about it. The battery is great, I get a full week of training runs out of it, but the app is so dense with features I have no clue what half of them mean. It shows me training readiness and aerobic effect, and I just want to know if I ran fast. The band is also a sweat magnet, just like the cheap ones. I swapped it for a scrunchie band from FTYQUEE and my wrist stopped itching.
Choose the Garmin if you’re training for a specific race time and you need the data to be truthful on every single run. It’s a tool, not a toy. But for the price of one of these, I can buy a stack of cheaper watches that do 80% of the job. I just can't justify it for everyday wear.
The Case for the $25 Watch That Doesn't Lie (B0GJSXGKG8)
This is the MorePro, and it’s the watch I actually wear the most. I bought it back in March, and it cost me $25. It’s the third one I’ve owned, and honestly, I’m blown away by what it does. The GPS is not Garmin-good, but it's close. On my 5-mile course, it said 5.1 miles. That’s a 2% error, which is totally fine for a training run. I’m not winning races, I’m just trying to beat my last time.
The heart rate is where it gets interesting. It said 162 when my chest strap said 158. That’s a 4-beat difference, which I mentioned earlier could be a problem for zone training. But for me, it’s close enough to know if I’m slacking or pushing it. The battery is the real winner here. I charge it when I shower every morning, 15 or 20 minutes tops, and it never drops below 70%. It has become this weird ritual, plugging it in while I scrub the dirt off my arms, and it works.
The biggest issue I have with it is the app. Pairing it was a nightmare. The QR code on the watch screen does not work. I almost threw it across the room. You have to dig through the paper manual that comes in the box and scan the QR code in there. I figured this out through sheer stubbornness and digging through reviews. One buyer, a guy named Dave, posted in April that he spent two hours fighting with the Bluetooth connection before he found the manual code. Same thing happened to me. It’s a pattern, not a fluke.
But once it’s paired, the DaFit app gives you an incredible amount of data that’s easy to understand. My mom called me once and had no idea I wasn't using my phone. She asked if I got a new phone. I told her it's the watch. She didn't believe me. For $25, this is a steal. It tracks steps, sleep, heart rate, and calls, and it costs less than dinner.
The One That Almost Made Me Quit (B0FQF5BZ8Z)
I have to be honest about this one. The Apple Watch is the one I bought for my wife, and I have a love-hate relationship with it. She loves it, which is the only reason it gets a mention here. The version I bought is the B0FQF5BZ8Z, and it’s the most polished piece of tech I’ve ever handled. The screen is beautiful, the apps work flawlessly, and the step tracking matches my phone perfectly. It’s the gold standard for a smartwatch.
But for running? I hate it. The battery is a joke. She charges it every single night, and if she forgets, it’s dead by noon the next day. I ran a half marathon with it once just to test it, and I had to turn off the cellular and the heart rate monitor to make sure it lasted the 2 hours I was out there. That’s ridiculous. My $25 MorePro lasted a full day and night of wear and still showed 82%. The Apple Watch can’t even make it through a single day without crying for a charger.
It also flatters you. The GPS said I ran 5.4 miles on my 5-mile course. That’s a lie, and a flattering one at that. I want the truth, not a pat on the back. The heart rate was off by 8 beats, which is too much for me to trust it for any serious training. It’s a great phone accessory, but it’s a terrible running partner. If you want a watch that tells you the truth about your runs, this ain't it.
The Disposable Mindset
Here’s what I’ve learned after four watches and eight years of testing. Cheap watches are disposable. I broke the pin latch on my first one and the watch worked fine. The second one was a gift. The third one, the MorePro, is still going strong after three months, which is more than I can say for the one I bought as a gift for my buddy. That one died completely after three months. No trauma, no buildup on the contacts, just stopped charging. I see that complaint pattern everywhere. The battery dying at three months is the single most common complaint across every cheap watch I’ve looked at.
You get what you get. If this MorePro lasts me six months, that’s about 14 cents a day. My friend's Garmin costs 30 times more and does maybe 10 times more. I'll take the cheap one. I’ve had people ask if my $25 watch was the expensive one. It looks almost identical on the outside.
The step tracking on the more expensive watches is also not immune to lying. Nothing makes me angrier than a watch that silently stops counting my steps. I work in a garden center, I’m walking constantly. When my watch tells me I’ve taken 2,000 steps at the end of the day, I know it’s lying. The fix is always the same, reset it, and it works for a while, then stops again. I’m done caring about that. If I can’t trust your step count, I can’t trust anything you tell me.
Which One Should You Buy?
I don’t track prices day to day, so I won’t pretend to know next week’s deals. But I know what these watches do on my wrist.
Choose the Garmin if you’re a serious racer who needs the GPS to match the course markers and the heart rate to match your chest strap. It’s the only one I’d trust for a marathon where I’m chasing a personal best. It’s expensive, but it’s a tool that does its job.
Choose the MorePro if you want a daily driver that tracks your runs, takes your calls, and doesn’t make you panic about the battery. It’s not perfect, the app is a pain to set up, and it might die in six months. But for $25, you can buy three of them for the price of one dinner out, and that math works for me.
Skip the Apple Watch entirely if running is your main goal. It’s a beautiful phone accessory, but it’s a liar on the road and a battery hog in the gym. I’d rather wear my $25 watch and know I’m getting the truth.
My honest bottom line is this: buy the MorePro, expect to replace it in a year, and you’ll be happier than if you spent $400 on a Garmin you’re scared to scratch. The best fitness watch is the one you’ll actually wear every day, not the one with the most features on paper. You get what you pay for, but sometimes you get way more.