The Edge 520 has everything I needed from a GPS at a good price. It has a water resistant build, easy to read and customize display, and compact. For me the deciding factor was having actual buttons (as opposed to a touchscreen) that allows me to use the unit in colder weather with full finger gloves.
I'm more of a casual rider, so I don't take advantage of the advanced features of the product. Having said that, there are some things that really bug me about it.
I primarily use it to upload my data to Ride wGPS. My biggest gripe is that when I'm done riding, uploading my data to the Garmin app via my cellphone rarely works wo rebooting my phone. I tend to use the latest and greatest Android versions (Nexus, Pixel), so that might be part of the problem. But the reboot is hugely annoying.
Lately the computer has been auto-enabling collision detection, and this goes off when I come to a controlled stop. I've since disabled it, but having the sirens go off on my phone at an intersection just irks me.
Finally, the Livetrack does work to notify my family of my rides, but sometimes beginning a ride it doesn't automatically turn on for 10 minutes or so nor does it always shut down cleanly after a ride.
I use it on all rides, auto-sync with Strava, syncs with HR monitor and power meter. Pairs with phone and shows when someone is calling or when a text is received (assuming you have service and aren't lost somewhere in the mountains..). Only complaint there is that when a text comes in it covers the screen (activity fields) and doesn't go away until you manually dismiss it by clicking a button. Yeah, picky, but I wished the text message would just dismiss after 10 seconds.
A handful of features I still don't use (and probably will never use).
Battery time is fine, nothing to worry about there. Size is perfect, out-front mount puts it in the perfect position. Buttons can be a little tricky to find/press when you're wearing full-finger gloves. But if you're riding with full-finger gloves then you have other problems to worry about.
The virtual partner thingy works, but takes a little to figure out at first. It's cool though to create courses from your own PR to race against.
Happens rarely, but I've had it completely die on me mid-ride when battery level is fine. Luckily it keeps a record of the ride, and after restarting the unit I can pick up where I left off. My brother (also 520) had the same experience once so I know it's not just my machine.
4 stars only because it's great, but not perfect.
I purchased the Edge 520 as an upgrade to my Edge 500. I like that it syncs with my iphone Bluetooth.
I also like that it can alert me to phone calls and text messages. I also find it easier to sync my heart monitor and speedcadence sensors between my two bicycles. At the end of the day the Edge 520 will upload to Garmin Connect, Strava and Ride with GPS.
I ride 4-5 dayswk, 175-200 miles - my Edge 520 is nearly as important as the bike itself. All the same great features of the 510 made better, plus better graphic presentations. And love the crash alert feature, plus textphone notices. Occasionally seems off on tracking instantaneous speed, but 510 had same problem which eventually went away, apparently through updates.
I bought this cycling computer to replace my old Garmin 500. I love the look and the capability of this computer as it does much more and has bigger numbers which are easier to read for this aging cyclist. I am still learning to use this computer as it does much more and is more complicated as the 500 was simpler and easier to manage. Hopefully over the next few weeks I will learn how to optimize it's ability and be a better cyclist.
I bought with hesitation because my Garmin 510 was doing just fine. I am so glad I purchased the Garmin 520. It's easier to use, it's interface is more user friendly, there's no delay in uploading rides, the maps are better, it's by far a better bike computer.
While I really liked my Edge 200, the 520 offers so much more. There are way more features (Bluetooth, messaging, Strava live segments just to name a few. The color screen is awesome, and the ability to add heart and cadence monitors is just the icing on the cake. All this in a package that takes up little space, just slightly larger then the 200. I so happy I pulled the trigger and got the 520. You won't be disappointed!
The Garmin 520 is a great device for tracking speed, HR and cadence. It's small and light, and the battery last for a long period time. I ride 6-10 hours a week and only need to charge the battery every 2-3 weeks. It's hard to use Edge 520 for map and navigation, so if you need to see the map all the time, Edge 1000 is a better option as other reviews suggested. However, Garmin Express is connected to Strava, so uploading the training log to Strava is always seamless. Overall, I recommend this device to everyone.
I really like this Garmin - I've had a few so far, upgrading as they keep getting better (I had a Garmin Edge 500 before this one). The Garmin mounting system couldn't be simpler. The battery life on this unit far better than the 500 (as advertised), the start up time is much quicker, and I love the additional communications with the IOS Connect app. The call and message notifications along with the wireless syncing all work well and are a huge improvement. I enjoy the segments but they aren't a make or break feature for me. The live tracking works well if you have a need for it.
My only negative is that for me the text size for call and message notifications is a bit small and hard to read, but if you have decent eyes that shouldn't be a problem. Overall the screen is quite readable even in the sunlight.