COROS suits runners and mountain athletes who want a light, focused GPS watch with long battery life and free training plans. Garmin suits people who want the widest choice of watches, from running and golf to diving, smart features and kids' models. If you know your sport and want light and simple, look at COROS; if you want options and extras, look at Garmin.
COROS and Garmin both make GPS watches for runners, but they go about it in very different ways. I read COROS's site, its PACE 4 and APEX 4 pages and app listing, plus Garmin's smartwatch range page and its Garmin Connect app listing.
COROS and Garmin side by side
| COROS | Garmin | |
|---|---|---|
| Focus | Endurance sports: running, trail, cycling, climbing | Running, fitness, outdoor, golf, diving, kids |
| Example battery | PACE 4: 41 GPS hours and 19 days of daily use | Filters from up to 5-13 days to up to 1+ month |
| Weight | PACE 4: 32 grams with the nylon band | Not stated on the pages I read |
| Maps | Topo maps on PACE 4; turn-by-turn on APEX 4 | Navigation on many models |
| Training app | COROS app and Training Hub | Garmin Connect |
| Free plan | Not stated | Not stated |
What COROS focuses on
COROS describes itself as GPS watches and training tools for endurance athletes, and its line-up is short: PACE 4 and PACE 4 Pro, APEX 4, NOMAD and VERTIX 2S. The PACE 4 page says it weighs just 32 grams with the nylon band, has a 1.2 inch AMOLED touchscreen and shows topo maps on the watch.
Battery is a big part of the pitch. COROS lists 41 GPS hours and 19 days of daily use for PACE 4, and the APEX 4 page says its battery lasts long enough for 100 miles around Mont Blanc. You can also record voice notes after a run and drop Voice Pins during it, and COROS offers training plans and workouts written by coaches.
What Garmin covers
Garmin's range page shows how wide its choice is. Forerunner covers running and triathlon, Venu and vivoactive cover health and fitness, fenix and Enduro cover long adventures, Instinct is the rugged option, and there are golf, diving and kids' models too. Battery filters run from up to 5-13 days to up to 1+ month, with solar charging on some watches. You can also filter by multi-band GPS, and by touchscreen or buttons only if you'd rather not swipe mid-run.
Garmin also packs in smartwatch extras: filters on its range page include an ECG app, cellular, cellular and satellite, and music. Everything feeds into Garmin Connect, which syncs with Apple Health, MyFitnessPal and Strava.
The weight and simplicity detail
Here's where runners notice the difference. COROS makes a point of weight, saying PACE 4 is lighter than the energy gel in your pocket, and of keeping each watch focused on training. Garmin's strength is choice: whatever your sport, there's a model, and many add smart features COROS doesn't lead with.
Both sync with Strava, so switching doesn't mean losing your running history there. The COROS app also syncs with Apple HealthKit and Google Health Connect.
Who each sports watch suits
COROS suits marathon and trail runners, climbers and cyclists who want a light watch and long battery, and people who don't want lots of smart features. Garmin suits multi-sport athletes, golfers and divers, people who want ECG, cellular or music on the wrist, and families choosing for kids too. If you're building fitness around a busy diary, these travel fitness tips for ski trips and this list of apps that reward you for walking make a good start.
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My advice on COROS or Garmin
Be honest about how you'll use it. If you mainly run or hike and want a light watch that lasts for days, try a COROS PACE or APEX. If you want one watch for running, golf, the gym and everyday notifications, choose the Garmin range that matches your main sport. Check the watch on your wrist if you can, because weight and screen size feel very different in person.
Do you make sports watches or training apps? Tool makers can ask to be considered for a featured place in comparisons like this one.
Frequently asked questions
How much does the COROS PACE 4 weigh?
COROS says PACE 4 weighs 32 grams with the nylon band.
How long does the COROS PACE 4 battery last?
COROS lists 41 GPS hours and 19 days of daily use for PACE 4.
Do COROS watches have maps?
Yes. COROS says PACE 4 shows topo maps on the watch, and APEX 4 adds turn-by-turn maps with trail and street names.
Do COROS and Garmin sync with Strava?
Yes. Both the COROS app and Garmin Connect list Strava among the apps they sync with.
Which Garmin watches have solar charging?
Garmin's range page lists solar charging options on models such as fenix 9 and Instinct 3.
