| Manufacturer | Garmin |
|---|---|
| Type | Mid-size GPS cycling computer with touchscreen and buttons |
| Series | Edge |
| Released | 11 April 2023 (announced 11 April 2023) |
| Price at launch | Edge 840: GBP 449.99 / USD 449.99 / EUR 499.99. Edge 840 Solar: GBP 519.99 / USD 549.99 / EUR 599.99. Edge 840 sensor bundle: GBP 519 / USD 549 / EUR 599 |
| Predecessor | Edge 830 |
| Successor | Edge 850 |
| Sizes | 2.6″ (66mm) screen; unit 57.8 x 85.1 x 19.6mm |
| Variants | Edge 840 (010-02695-01); Edge 840 Solar (010-02695-21) with Power Glass solar charging lens. The Edge 840 is also sold as a sensor bundle |
Specifications as at launch. Features and activity profiles reflect the latest Garmin software.
Expert opinion | What’s new | Specifications | Battery life | Features | Comparisons | Quick answers | Further reading
Expert opinion
Garmin’s mid-size Edge with both buttons and a touchscreen: riders press buttons for most tasks and touch the screen for menus and maps. That pairing makes it the easier of the Edge 540 and 840 to live with, and its 26 hours of demanding use comfortably outlasts the brighter Edge 850.
Free-Ride ClimbPro guides riders up unfamiliar hills without a route, and multi-band GNSS gave clean tracks over 1,000 test miles. The standard battery is long enough that the Solar edition adds only a modest margin.
Garmin Edge 840
Touchscreen and buttons together, with maps and ClimbPro for every hill.
What’s new versus the Edge 830
Hardware
- Multi-band (dual-frequency) GNSS and an added gyroscope
- Solar edition with a Power Glass lens, new for this tier
- Button controls alongside the touchscreen
- USB-C charging port
- 32GB storage, up from 16GB
- Battery life up from 20 hours to 26 hours (32 hours for the Solar)
- Larger body at 57.8 x 85.1 x 19.6mm and 84.8g, against 49 x 73 x 21mm and about 80g for the Edge 830
Software
- Cycling ability and course demands analysis
- Targeted adaptive coaching, with daily suggested workouts tied to events
- Real-time stamina
- Power guide
- ClimbPro ascent planner with Free-Ride mode and climb search in Garmin Connect
- On-device Connect IQ Store and real-time settings sync with the Garmin Connect app
- Incident detection that includes off-road riding
Specifications
The Edge 840 and Edge 840 Solar are shown side by side. They share the same body, display, sensors and storage.
| Specification | Edge 840 | Edge 840 Solar |
|---|---|---|
| Display | ||
| Display type | Transflective TFT, colour | |
| Display size | 66mm (2.6″) diagonal | |
| Resolution | 246 x 322 pixels | |
| Solar charging | No | Power Glass solar lens, up to 25 extra minutes per hour of daytime riding |
| Touchscreen | Yes, plus buttons | |
| Physical | ||
| Dimensions | 57.8 x 85.1 x 19.6mm | |
| Weight | 84.8g | 88.9g |
| Water rating | IPX7 (1m for 30 minutes) | |
| Charging port | USB-C | |
| Operating temperature | -20 to 60°C | |
| Charging temperature | 0 to 45°C | |
| In-ride power | Compatible with the Power Mount and Garmin Charge battery pack | |
| © the5krunner. Link required. | ||
| Sensors and positioning | ||
| GNSS | GPS, GLONASS, Galileo, multi-band | |
| Other sensors | Barometric altimeter, magnetometer, gyroscope, accelerometer, ambient light sensor | |
| Connectivity and storage | ||
| Connectivity | Bluetooth, ANT+, Wi-Fi | |
| Smartphone compatibility | iPhone and Android | |
| Storage | 32GB | |
| History | Up to 200 hours | |
| Waypoints and courses | 200 waypoints, 100 courses | |
| Maps | TopoActive cycling maps with integrated Trailforks trail data; Wi-Fi map manager added by software update | |
| Electronic shifting | ANT+ electronic shifting, Shimano Di2 Synchro Shift integration | |
| © the5krunner. Link required. | ||
Battery life
Figures are Garmin’s launch figures. Solar figures assume riding in 75,000 lux conditions.
| Mode | Edge 840 | Edge 840 Solar |
|---|---|---|
| Demanding use | Up to 26 hours | Up to 32 hours with solar |
| Battery saver mode | Up to 42 hours | Up to 60 hours with solar (continuous 75,000 lux during daytime rides) |
| © the5krunner. Link required. | ||
Features
A full breakdown of Garmin platform features is available at Garmin features explained.
Cycling
- Power meter, Cycling Dynamics and MTB Dynamics support
- FTP tracking
- Power guide, with wind and stamina adjustments added by software update
- Compatible with Varia rear-facing radar, Varia Radar Camera and Varia lights
- Varia headlight camera compatibility, added by software update
- Edge remote and Varia remote control
- Smart trainer control
- Extended display, sharing data screens from a Garmin watch
Plan
- Daily suggested workouts tied to events
- Downloadable training plans
- Garmin Cycling Coach, added by software update (public beta from October 2026)
- Interval training and advanced workouts
- Courses with on-device course creator and location search; multi-point course creation added by software update
- ClimbPro ascent planner for courses and free riding
- Trendline popularity routing and popularity heatmap
Prepare
- Training Status, Training Load and Training Load Focus for cycling
- Cycling ability and course demands analysis
- Recovery advisor
- Physio TrueUp
- VO2 max
- Weather forecasts and weather alerts
Perform
- Real-time stamina
- Training Effect
- Segments, virtual partner and race an activity
- Auto Pause, Auto Lap and auto scroll
- Customisable data screens
- Goal alerts for time, distance, heart rate or calories
Connect
- Smart notifications, with text replies on Android
- Incident detection, including off-road, and assistance
- LiveTrack and GroupTrack
- Rider-to-rider messaging
- GroupRide, added by software update (public beta from October 2026)
- GroupRide competitions, awards and incident detection, added by software update
- Community-generated hazard reporting, added by software update
- Garmin Share, added by software update
- Find My Edge and bike alarm
- inReach compatibility
- Connect IQ Store on the device and real-time settings sync with Garmin Connect
- VIRB camera remote
Garmin Edge 840
Touchscreen and buttons together, with maps and ClimbPro for every hill.
Comparisons and upgrade guides
- Garmin Edge 540 and 840 launch opinion, covering the 540 against the 840, the Solar editions and upgrade advice
- Garmin Edge 850 and 550 first look, the successor and its battery life against the 840
- Garmin Edge 540 review, comparing the 540, 840 and 1040
Quick answers
When was the Garmin Edge 840 released?
Garmin announced and released the Edge 840 on 11 April 2023. The launch price was GBP 449.99 or USD 449.99, and GBP 519.99 or USD 549.99 for the Edge 840 Solar.
Does the Edge 840 have a touchscreen?
Yes, Edge 840 has a 2.6 inch colour touchscreen at 246 x 322 pixels, plus buttons for most tasks.
Does the Edge 840 have maps?
Yes, Edge 840 has TopoActive cycling maps with integrated Trailforks trail data. Its ClimbPro ascent planner works on courses and in Free-Ride mode without a route.
Does the Edge 840 have solar charging?
Only the Edge 840 Solar has a Power Glass solar lens, which adds up to 25 minutes per hour of daytime riding. The standard Edge 840 has no solar charging.
How long does the Edge 840 battery last?
Garmin rates Edge 840 for up to 26 hours in demanding use and 42 hours in battery saver mode. Edge 840 Solar reaches 32 hours and 60 hours with solar in 75,000 lux conditions.
How much does the Edge 840 weigh?
Edge 840 weighs 84.8g and Edge 840 Solar 88.9g. Both measure 57.8 x 85.1 x 19.6mm and have an IPX7 water rating.
Further reading
- Big feature bump for the Edge 540, 840 and 1040
- Edge 1060 features reach the Edge 840
- Edge x40 firmware moves from USB drive mode to MTP
- Garmin watch specifications
- Release Radar: upcoming Garmin watches
Related watches
Predecessor: Garmin Edge 830, the 2019 mid-size Edge with 16GB storage and up to 20 hours of battery.
Also consider: Wahoo ELEMNT ROAM 3, a mid-size touchscreen and button bike computer from 2025 at a similar price.
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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