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  • Turn-by-turn GPS navigation
  • GLONASS and altimeter accurately tell you how fast, how high, how far you've gone and where you've traveled
  • Compatible with Varia rearview radar to see vehicles coming from behind, Varia Vision to get in-sight display of key data and Varia smart bike lights for responsive lighting
  • Integrated accelerometer provides incident detection which automatically sends location data to emergency contacts if you need assistance (primarily designed for road use)
  • GroupTrack keeps tabs on up to 50 other riders in your pack when paired with a compatible smartphone, offering peace of mind and situational awareness
  • External heart rate monitor support (monitor sold separately)
  • Receive alerts for incoming calls, emails and text messages when paired with your smartphone and Garmin Connect Mobile app; instantly share your ride details via social media
  • Connect features allow you to send and receive course details, live tracking, social media sharing, weather and more
  • Preloaded Garmin Cycle Maps feature turn-by-turn navigation and cycling-specific points of interest; includes round-trip Course Creator and on-device course planning
  • High-resolution, color, 2.3-inch, capacitive touch screen works with gloves and when wet
  • Connect IQ store lets you download free custom apps and data fields
  • Auto pause; auto lap; auto start; auto scroll
  • Dimensions: 1.9 x 2.9 x .08 in.; screen size: 2.3 in. (diagonally); weight: 2.4 oz.
  • Included: extended out-front mount, standard mount, tether, USB cable and user manuals


View all Garmin Cycling Computers

REI membership


Best Use Cycling
GPS Tracking Yes
Current Speed Yes
Maximum Speed Yes
Average Speed Yes
Speed Comparator Yes
Odometer Yes
Trip Distance Yes
Auto Start/Stop Yes
Stopwatch Yes
Clock Yes
Alarm Yes
Lap Timer Yes
Cadence Yes
Altimeter Pressure-based
Temperature Yes
Target Zone Indicator Yes
High/Low Target Heart Rate Yes
Exercise Log Yes
Illumination Backlight
Low Battery Indicator Yes
Batteries Lithium-ion
Battery Life 15 hours
Wireless Yes
Rated 1 out of 5 by from Dissapointing Seems to work ok to just start a random trip. However it when I tried a ride with a course plotted into it I ran into a lot of problems. First, it couldn't handle an "out and back" route. So, when I turned around at the midway point it kept trying to route me back to the midway point instead of home. Then while it was digesting that it periodically froze or would increase its nagging that I turn around. At one point the entire unit froze and I had to get home and read the manual for a hard reset which caused me to lose all my ride's data. While it was working it did do an ok job of alerting me on turns. But, the map is really tiny and didn't have a lot of detail and I'm not sure how helpful it would have been if I'd gotten lost and tried to navigate my way out of my lostness with it. I don't think any of this is operator error but if it was it is still an incredibly disappointing user experience to have to troubleshoot technology while on a ride instead of that technology enhancing/assisting the ride. I bought this product because my navigation app on my phone would drain my battery and almost never make it through the ride. I almost think sticking with my phone and buying a portable battery charger might be a better option.
Date published: 2016-10-30
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Will this pair with a power meter such as the Vector 2 or 2S and show watts / power

Asked by: kaykay
This bike computer is not compatible with the Garmin Vector Pedals.
Answered by: REIservice
Date published: 2017-06-03

How long does it take to charge the Edge 820 Explorer for the first time & how long does it take to charge for subsequent charges?

Asked by: Tourist
This device takes approximately 3-4 hours to charge.
Answered by: REIservice
Date published: 2017-06-13

how much memory in this thing? isn't mentioned in the spec. mentions preloaded maps. does that come with it (included with the unit) or something you have to purchase and load before you go out? how much memory does that eat up?

Asked by: Utah CJ
16 GB of internal storage, no SD slot like the 1000. Not sure on map details but I am sure you could get that from the Garmin site. I hear this unit is pretty slick. Ive ridden with a few riders that have them and they love it. This will be a purchase of mine when I have the free cash. Wish I could get now.
Answered by: BlueBirdDaze
Date published: 2016-09-08

how does the accident detection work? is there any kind of delay or over ride in case you just stop short and ambulance isn't needed?

Asked by: Utah CJ
The accelerometer has algorithms that pick up a wreck or similar issue. There is a screen that immediately pops up that you can touch to dismiss any signal getting sent to your emergency contact.
Answered by: BlueBirdDaze
Date published: 2017-04-29
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