Garmin Edge 840 review - touchscreen, feature-packed, phenomenal battery life

There's very little to fault with this model's first update in four years, and it remains a truly excellent choice for any committed rider

Garmin Edge 840 mounted on a road bike
(Image credit: Future)
Cycling Weekly Verdict

It's a substantial investment, but the Garmin Edge 840 packs a lot of features and, if the pervious model is anything to judge by, it'll last you many, many years and remain reliable. If you're looking to improve your performance as well as fuss-free navigation, this piece of kit will help you significantly

Reasons to buy
  • +

    Phenomenal battery life

  • +

    ClimbPro is a fantastic tool

  • +

    Loads and loads of screen options

  • +

    Excellent connectivity

  • +

    Touchscreen

  • +

    Can help improve training

Reasons to avoid
  • -

    Gradient and mapping issues

  • -

    Too many features?

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

For more than a decade the various guises of the Garmin Edge have been the go-to head unit for cyclists around the world, and the latest version in the 800 series is aiming to further embed itself as one of the best cycling computers in today's market.

The 840 (along with its non-touchscreen sibling, Edge 540) has been updated for the first time in four years, and as well as adding another '10' onto the previous iteration, the 830, it marries together many of its much-loved previous features with that of the newer and larger Garmin Edge 1040.

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Chris Marshall-Bell

A freelance sports journalist and podcaster, you'll mostly find Chris's byline attached to news scoops, profile interviews and feature writing across a variety of different publications. He has been writing regularly for Cycling Weekly since 2013.


Previously a ski, hiking and cycling guide in a number of places, but mostly in the Canadian Rockies and Spanish Pyrenees, he almost certainly holds the record for the most number of interviews conducted from snowy mountains.


He lives in Valencia, Spain.