Garmin Edge 840, Compact GPS Cycling Computer with Touchscreen and Buttons, Targeted Adaptive Coaching, Advanced Navigation a

4.5 4.5 out of 5 stars | 170 ratings

Price: 439.99

Last update: 09-04-2024


About this item

Advanced GPS cycling computer with touchscreen and button control combines superior navigation, planning and performance tracking, cycling awareness and smart connectivity
Battery life: up to 26 hours in demanding use cases; up to 32 hours in battery saver mode
View daily suggested workouts and training prompts on screen; based on your event, get personalized coaching that adapts to your current training load and recovery when riding with a compatible power meter and heart rate monitor
Find your way in the most challenging environments with multi-band GNSS technology that provides enhanced positioning accuracy
See remaining ascent and grade when climbing so you can gauge your effort with the ClimbPro ascent planner, now available on every ride — no course required; view on your Edge device and in the Garmin Connect app on your smartphone for ride planning
Classify your strengths as a cyclist, and compare your cycling ability to the demands of a specific course, so you can focus your training and improvement in the right areas, when paired with your compatible power meter and heart rate monitor
Manage your efforts with the power guide feature, which recommends power targets throughout a course, when paired with your compatible power meter
Get stamina insights while you ride, so you can keep an eye on how much longer you can really push it, when paired with your compatible power meter and heart rate monitor
Stay on top of your training program with prompts to complete missed workouts
Ride like a local, whatever your bike type, with improved ride type-specific maps that highlight popular roads and trails plus searchable points of interest

Product information


Top reviews from the United States

Sonya Weasner
5.0 out of 5 stars Awesome bike computer!
Reviewed in the United States on January 15, 2024
This is my first cycling computer and I absolutely love it. The screen size fits in tons of data, you can customize it to see the data you want, it syncs easily with my Fenix 7S Pro, and it works great with the sensors. I've used it for both outdoor rides and indoor rides on a bike trainer (Wahoo Kickr). For both activities, I've been beyond impressed. I love the touchscreen, the colors, and graphics. Highly recommend!
CJ
5.0 out of 5 stars Excellent Purchase
Reviewed in the United States on July 2, 2024
This was easy to install on bike. It can be swapped from one bike to another with very little effort. Works with the Garmin Connect app similar to Garmin watches. Makes biking a wireless experience. It looks good and the quality is great. Love the easy navigation. Excellent battery life.
Da Momster
5.0 out of 5 stars Can’t go wrong
Reviewed in the United States on February 27, 2024
I love this Garmin, already has the trail map for the trail I ride. Great responsive touch screen. I can easily see the screen in the daytime. The handle bar mount for the mountain bike is just OK, it works but I don’t like using the plastic bands that it takes to fasten it and I also don’t like the position of the Garmin in the bars so I purchased a third party mount that places the Garmin over my stem. The Garmin itself is awesome and I am very happy with it. No problems connecting a heart rate monitor or connecting to my phone. It uploads my rides to my phone without issue. I would recommend to anyone.
Robert D Zelwick
5.0 out of 5 stars Works great!
Reviewed in the United States on June 15, 2024
This unit was easy to set up and works great. The battery life is impressive!
Sherri Short
5.0 out of 5 stars I really like the touch screen
Reviewed in the United States on August 22, 2024
I have used a Garmin 520 and then the 530 for the last 7 years. After being hit by a car I needed to replace my Garmin and decided on the 840 for the touch screen. I'm glad I did, it's a feature I didn't know I needed - but worth the extra cost in my opinion.
Chuckykhan
5.0 out of 5 stars Love this new Garmin 840
Reviewed in the United States on June 29, 2023
Garmin is becoming my go to company for measurements. I have the S2 scale for weight. The HRM Pro Plus Blood Pressure Monitor, the Garmin Power Pedals, the Heart Rate Monitor Pro Plus, my Garmin Radar Light Varia 515 (non video camera) and now this fantastic Garmin Edge 840 Cycle Computer. All these are integrated and synced to the Garmin Connect App. It's a lot of good health information to analyze to make smarter fitness decisions. Like the 840 because it starts instantly, no waiting. Gives me around 63 measurements in a single ride. It's pretty speedy. I got the 1040 but didn't like it. I like this smaller size. Links with Strava. It's pricey but all Garmin is pricey. Measure to Motivate. I'm 70 and I can still ride 100 miles. I generally do 20 mile rides 3 or 4 times a week. Love this pairs with Shimano dI2 shifters so I have a visual of what gear I'm in and the radar lets me know vehicles behind me accurately. Recommended.
TimK
4.0 out of 5 stars Good replacement for a 510, short battery life with high screen brightness.
Reviewed in the United States on December 20, 2023
I bought this as a replacement for my Garmin 510 which finally broke after 10 years. The 840 has a very good color screen. It has a touch screen as well as side buttons. It has all the functions of the 510 and then some. I only use the basic functions.

In order to see the screen in daylight on my bike, I have to turn the screen brightness all the way up. A downside to doing this is the battery then only lasts 3-4 rides. I've already had it die on me during a ride. The 510 used to last 12+ rides.

I rate it 3-4 stars because of needing to turn up the brightness which results in only a few rides being recorded before a recharge.
Fastred of Greenholm
5.0 out of 5 stars Garmin Support Lacks Competency and Knowledge
Reviewed in the United States on August 17, 2023
I bought the Edge 840 to replace my Edge 810, after the weather/water seal on the power button degraded. I've spent two weeks with Garmin Support trying to get the new unit operational. Support has no idea what they are doing. The 840 when first connected to Garmin Express needed to update its preinstalled maps of Europe and North America. Immediately upon trying to update an error message occurred. Support had me use Express as an administrator after removing and reinstalling Express. The 840 had 27.4GB of preinstalled files. Support was concerned as to what those files could be and had me upload zipped files of my Garmin folder. Support was sure that there were extraneous files preventing the updating of the maps. My return window with Amazon had closed. Support finally agreed to exchange my 840 for a new one. The new unit had the same 27.4GB of preinstalled files. The new 840 had the same error message and could not update its maps. Support wanted screen shots of my laptop's memory, insisting the problem was with my computer or my ISP. After some research I realized my 840 had insufficient memory to update the installed maps. Going to "manage maps" in Express, I removed Europe and could update North America. I then removed North America and could update Europe. So, ins short, Garmin has produced a unit with 32GB of storage that cannot accommodate both of its 2023 maps for Europe and North America. Not a big deal as I can change the maps before traveling.

The big deal is that support didn't know the size of the files preinstalled in the 840 and could not recommend the easy fix that i found on my own. Several weeks of emails, uploading of Garmin files for Support to review and, of course, a non-working 840 while I waited for a resolution that Support could not provide.

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