Why I Switched from Garmin to COROS (And Never Looked Back)

I wore a Garmin Fenix 7 for three years. It tracked thousands of trail kilometers, survived mud, rain, rock scrapes, and one accidental dunk in a mountain stream. It was a good watch. But I sold it six months ago and switched to COROS, and I have zero desire to go back.

This is not a spec comparison article. You can find those anywhere. This is my personal account of why I made the switch, what surprised me, what I miss (not much), and what I definitely do not miss. If you are a trail runner on the fence between these two brands, my experience might save you some time and some money.

The Trigger: Why I Started Looking

I did not wake up one day hating Garmin. It was a slow buildup. Three things pushed me over the edge.

First, Garmin kept adding features I did not ask for. Every firmware update introduced some new training metric, some new widget, some new integration. My watch started feeling like a smartphone strapped to my wrist. I run trails to get away from complexity. I do not need my watch to tell me about my sleep coaching score, my jet lag advisor, or my morning report that recommends whether I should train today. I know whether I should train today. I look out the window and check my legs.

Second, I noticed my Fenix barely lasting two days in GPS mode on a long weekend. I was charging mid-trip on a three day trail adventure. That is not acceptable for a watch that costs over $900.

Third, a friend showed me his COROS Vertix 2 and I was struck by how calm the interface was. Three screens. No clutter. Battery lasting an entire week of daily training. I was intrigued.

What I Switched To

I went with the COROS Vertix 3. Not the cheapest option, but I wanted the flagship trail experience. It cost me $600. My Garmin Fenix 7 Solar had been $900. For a comparable feature set, I saved $300 right out of the box.

Let me be clear about the numbers that matter to me as a trail runner:

Feature	Garmin Fenix 7 Solar	COROS Vertix 3	Winner
GPS battery life	48 hours	95 hours	COROS
Weight	79g	66g	COROS
Price	~$900-1000	~$600	COROS
Data fields available	200+	~50	Depends on perspective
Third-party apps	Connect IQ ecosystem	None	Garmin
Navigation/maps	Full topo maps	Full topo maps	Tie
Heart rate accuracy	Good	Good	Tie
Training algorithm	Garmin Training Status	COROS EvoLab	Tie
Music storage	Yes	Yes	Tie

That battery life difference is not a typo. 95 hours versus 48 hours in full GPS mode. On a multi-day trail run, that is the difference between peace of mind and anxiety about your watch dying on day two.

The Four Reasons I Stayed

Battery Life Changes Everything

On paper, 95 hours versus 48 hours looks like a nice improvement. In practice, it transforms how you use the watch. I no longer think about charging. I no longer plan my runs around battery percentage. I leave for a four day trail trip and never once look at the battery icon. It just works.

Last month I did a 50km mountain run that took 9 hours with elevation gain. My COROS went from 89% to 79%. My old Garmin would have dropped 20-25% in that same time. The Vertix 3 feels like it could run forever.

Simplicity is a Feature

COROS gives you what you need and nothing more. I have three watch faces I cycle through. My activity profiles show me pace, distance, elevation, heart rate, and time. That is all I want. I do not need VO2 max estimates updating every run. I do not need training load focus telling me I am doing too much anaerobic work. I do not need a body battery score.

Some people love that data. I respect that. For those runners, Garmin is the better choice. But if you are someone who runs by feel and uses a watch primarily for navigation and basic metrics, COROS feels like relief.

The Price Makes Sense

I cannot justify spending $1000 on a running watch. I just cannot. The COROS Vertix 3 at $600 is already my most expensive piece of running gear. But it does everything the Fenix does for trail running at nearly half the price. The COROS Pace 3 does 90% of what I need for $229. The value proposition across their entire lineup is consistently better.

For a deeper look at how COROS prices stack up across models, check out this breakdown of COROS pricing and which model is the best value.

Weight Matters on Long Days

13 grams does not sound like much. But when you are 8 hours into a mountain run and everything feels heavy, lighter is better. The Vertix 3 at 66g feels noticeably lighter on my wrist than the Fenix did. It is a small thing, but small things add up over 50+ kilometers.

What I Genuinely Miss

I want to be honest here. COROS is not perfect, and there are two things I miss from Garmin.

Connect IQ and Third-Party Apps

Garmin has an entire ecosystem of third-party watch faces, data fields, and apps. I used a custom watch face that showed sunrise/sunset times, a trail running data field that calculated gradient-adjusted pace, and a widget that showed weather forecasts. None of that exists on COROS.

COROS gives you what they build. That is it. No marketplace, no custom anything. For me, that is fine because I prefer simplicity. But if you loved tinkering with your Garmin, this will feel limiting.

The Community Size

Garmin Connect has millions of users. Everyone you know probably has a Garmin. The social features, challenges, and course sharing are more robust. COROS is growing, but the community is smaller. If you rely on group challenges or sharing routes with friends on the same platform, Garmin still wins here.

What I Do Not Miss at All

The Subscription Push

Garmin has been pushing Garmin Connect+ as a paid subscription. Features that were free are migrating behind a paywall. Training plans, advanced analytics, the stuff they used to include as part of a $900 watch purchase. That left a bad taste.

COROS has stated they will not introduce subscription services. All features included, forever. Whether they keep that promise long-term remains to be seen, but for now, I appreciate not being nickel-and-dimed after already spending significant money on hardware.

Feature Bloat

My Fenix had settings menus inside settings menus. Configuration options for things I did not know existed. Every firmware update added more. The watch got slower over time as they piled on features. I spent more time configuring my Garmin than actually using most of its capabilities.

The COROS experience is intentionally limited. And that limitation feels like freedom.

The Fragile Charging Cable

Garmin’s proprietary charging cable is flimsy and annoying. It pops off if you look at it wrong. The COROS charging cable is equally proprietary, but it clips on firmly and stays put. A small thing, but after three years of Garmin cables falling off at night, I noticed immediately.

Who Should NOT Switch

Let me be real. COROS is not for everyone. Stay with Garmin if you:

• Love data and want maximum customization of your watch face and data screens
• Use Connect IQ apps extensively
• Rely on Garmin’s ecosystem for training plans and coaching
• Want music streaming integration (COROS does stored music, not streaming)
• Need the largest possible community for social features

If you want a deep comparison between both brands and Apple Watch, this article covers all three side by side.

The Trail Runner’s Perspective

I run trails because I want simplicity. Dirt under my feet, mountains on the horizon, no notifications. My watch should support that experience, not fight against it. COROS gives me a tool that does its job and stays out of my way. I press start, I run, I press stop. The battery lasts all week. The GPS is accurate. The altimeter works. The navigation gets me home when I explore new routes.

For a head-to-head comparison of these specific models for trail and ultra running, the Vertix 3 vs Enduro 3 comparison goes deeper into specs.

That is all I need. Nothing more, nothing less.

If you are curious what other runners think about this same decision, the Reddit discussion on Garmin vs COROS is worth reading. The community is split, but the reasons people give for switching mirror my own experience almost exactly.

Six Months Later: Any Regrets?

None. Genuinely none. My COROS Vertix 3 has been on my wrist every single day for six months. It has tracked mountain ultras, easy recovery jogs, and everything in between. I have charged it roughly once a week during heavy training blocks, once every ten days during lighter periods.

The firmware updates have been small and focused. No feature dumps, no surprise changes to the interface. Just minor improvements and bug fixes. COROS seems to respect that their users chose the watch for what it already does, not for what it might become after seventeen updates.

I saved $300 on the purchase. I gained 47 hours of GPS battery life. I lost nothing that I actually used in my daily running life. For a trail runner who values simplicity and battery, this was the right move.

FAQ

Is COROS GPS accuracy as good as Garmin?

In my experience, yes. Both use multi-band satellite systems now. On trails with heavy tree cover, I have not noticed any meaningful difference in track accuracy. Open terrain is identical. The occasional GPS drift happens on both platforms in deep canyons.

Can I sync COROS with Strava?

Yes. COROS syncs automatically with Strava, TrainingPeaks, and several other platforms. The sync is fast and reliable. I have never had a failed sync in six months of use.

Is COROS good for non-trail running too?

Absolutely. I use mine for road runs, hikes, and even the occasional bike ride. The activity profiles cover everything a multi-sport athlete needs. It just happens that COROS excels at trail and ultra running because of battery life and simplicity.

Will COROS eventually add subscriptions like Garmin?

COROS has publicly committed to not introducing subscription services. All features remain free with the hardware purchase. Nobody can predict the future, but their current stance is clear and their track record supports it.

Is it hard to switch from Garmin to COROS?

The transition took me about two days. The COROS app is simpler than Garmin Connect, so there is less to learn. You cannot import historical data from Garmin directly, but both sync to Strava, so your running history stays intact there. The hardest part was muscle memory for button placement, which took maybe a week to adjust.