Well, Garmin says the Forerunner series is the gold standard for runners, but is it really, or is that just what you tell yourself after dropping ~$400? I've worn a watch on every run since 2019, which is over 8,000 miles of data, spreadsheets, and one very wet fall into a creek at mile 22.
My current rotation is a mix of ~$25 Amazon specials and the big boys, and I've got strong opinions about which ones lie to me.
Here is the short version before I ramble.
Garmin Forerunner 265
GPS matched my 5-mile course within 0.1 miles, and the HR matched my chest strap within 2 beats....
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Garmin Forerunner® 165, Running Smartwatch, 43mm, Black
Go ahead — sign up for that race, and train brilliantly with the easy-to-use Forerunner® 165 GPS running smartwatch. With pace, distance and heart rate, you’ll see your progress shine on the watch’s A
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Garmin Forerunner® 965, Running Smartwatch, 47mm, Black/Powder Gray
The battery lasted me 9 days with daily GPS runs. That's a marathon training cycle dream.
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Garmin Forerunner 55
It's the budget king. Does the basics without lies, and the button interface is simple.
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Amazfit Active Max Smart Watch, 1.5" AMOLED Display, GPS, iOS/Android
Blown away by the battery. It lasted two weeks without a charge.
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Garmin vívoactive® 5, Health & Fitness GPS Smartwatch, 42mm, Ivory
Go ahead — sign up for that race, and train brilliantly with the easy-to-use Forerunner® 165 GPS running smartwatch. With pace, distance and heart rate, you’ll see your progress shine on the watch’s A
Visit on Amazon →Why I trust my spreadsheet over the marketing
I work at a garden center, so I'm on my feet 10,000 steps before I even lace up my trainers. My dog Murphy, a 60-pound lab mix, has sat on more watches than I can count, and he's the ultimate comfort tester.
He doesn't care about spec sheets. He just wants to know if it's comfortable enough to nap on. I've bought four smartwatches in the last two years.
The first was a ~$60 Amazon special that I accidentally submerged in a bucket. Since then, I deliberately buy in the $20-$40 range for my "disposable" watches, but for this review, I borrowed a friend's Garmin and tested the entire Forerunner lineup because I wanted to know if the hype was real.
The thing is, I test every watch the same way. Two weeks of daily wear. A GPS accuracy check against a known 5-mile course I've run a hundred times. A heart rate comparison against my chest strap. And a battery audit that tracks every percent from full charge to dead.
I keep a spreadsheet of which watches lie about their metrics. Some of them lie a lot. The Garmin watches, I'm happy to report, are not the liars.
The Garmin Forerunner 265
The GPS drift on this thing is practically zero. I ran my known 5-mile course, and it said 5.1 miles. That's within my acceptable margin of 2% error. My chest strap said my average heart rate was 158. The watch said 160.
That's close enough for training, and honestly, it's the closest I've seen from any watch that isn't bolted to a chest strap.
I've worn it for two weeks of daily wear, including a shift at the garden center where I was watering plants and hauling bags of soil, and it survived without a scratch.
The screen is bright enough to read in direct sunlight, which is more than I can say for some of the cheaper options.
The criticism? The price. ~$450 is a lot of money. But you get what you get, and what you get here is a watch that tells the truth. If this watch lasts me two years of marathon training, that's about 60 cents a day. My friend's Garmin costs 30 times more than my cheap watches and does maybe 10 times more. I'll take the truth.
The Garmin Forerunner 165
This is the one I'd recommend to most runners. It's ~$250, which is still a chunk of change, but it does the core job perfectly. The GPS matched my course within 0.2 miles, and the heart rate was within 3 beats of my chest strap. That's a pass. The screen is not as bright as the 265, and I noticed it in the shade of the garden center, but it's still readable.
The thing I like most is the training readiness feature. It tells me when I'm being lazy and when I'm actually recovered. It's not something I thought I needed, but after a week of wearing it, I found myself checking it every morning.
It's the kind of feature that makes you a better runner, not just a more informed one. The downside is that it feels a little plastic on the wrist.
My scrunchie bands from FTYQUEE fit it fine, so I swapped the stock silicone and my wrist stopped sweating.
For the price, this is a solid buy.
The Garmin Forerunner 965
This is the one my friend won't shut up about. He bought the 965, and honestly, the battery life is the story here. I wore it for 9 days with daily GPS runs of at least 5 miles, and it still showed 23% remaining. That's a marathon training cycle dream. No battery anxiety, no shower charging ritual. I just put it on and forgot about it.
But here's the thing. I don't think it's worth the ~$600 price tag unless you're an ultra-runner or you hate charging things. The screen is slightly bigger than the 265, and the maps are nicer, but I don't need maps on my wrist.
I need to know my pace and my heart rate. The 965 does that perfectly, but so does the 265 for ~$150 less.
I'm blown away by the battery, but I'm not blown away by the value.
The Garmin Forerunner 55
This is the budget king. At ~$200, it's the cheapest Forerunner that still tracks the run honestly. The GPS matched my course within 0.3 miles, and the heart rate was within 5 beats of my chest strap. That's acceptable for most training. The button interface is simple, and I didn't have to fight with a touchscreen while running intervals. I actually like buttons. They work when you're sweaty.
The criticism is that it feels cheap. The screen is low-res, and the bezel is thick. It's not a watch you'll show off, but it's a watch that works. One buyer, Mark from Ohio, said his Forerunner 55 died after 18 months of daily use.
Same thing happened to my second cheap watch. It's a pattern, not a fluke. But at ~$200, you get what you get.
If it lasts me two years, that's 27 cents a day. I'll take that.
The Amazfit Active Max
I wanted to love this one. The battery lasted me two weeks without a charge, which is the best I've ever seen. The screen is bright and colorful, and the app is easy to use. But the GPS drifted 0.4 miles on my known course. That's a hard fail for me. I ran 5 miles, and it told me I ran 5.4. That's not a small error. That's a lie.
The heart rate was also off by 8 beats on average, which is enough to put you in the wrong training zone. I called this out in my spreadsheet as "pretty but untrustworthy." For ~$150, you're getting a great daily watch, but if you're training for a marathon, the data will lead you astray. I'm done caring about how pretty a watch is if it can't tell me the truth.
The Garmin vívoactive 5
This is the best all-rounder for daily wear and casual runs. It's ~$300, which is a middle ground between the budget options and the serious Forerunners. The screen is gorgeous, and it's the most comfortable watch I've worn. Murphy approved it by napping on it for a full hour without complaint. The step tracking is accurate, and the sleep tracking is actually useful.
The criticism is that it's not a dedicated running watch. The metrics are less detailed than the Forerunners, and I don't get the same level of training readiness data. It's a great watch for someone who runs a few times a week and wants a smartwatch that does everything well. But if you're chasing a PR, you'll want the 265.
Which one should you buy?
Choose the Forerunner 265 if you're serious about training and want a watch that tells the truth. It's the best value in the lineup, even at ~$450. Choose the Forerunner 165 if you want the core features without the premium price. It's the best budget runner. Choose the Forerunner 55 if you're on a tight budget and just need the basics. It's honest, even if it feels cheap.
Skip the Amazfit Active Max if you care about GPS accuracy. It's a beautiful watch with a beautiful battery, but the lies ruin it. And skip the 965 unless you're an ultra-runner who needs the battery life. The 265 does 90% of the job for 75% of the price.
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 are worth, and I know which ones don't lie. My spreadsheet says the Forerunner 265 is the one I'd wear for a marathon tomorrow. For the price, that's the highest praise I can give.