Could Hammerhead's latest Karoo be the long-awaited competitor to Garmin and Wahoo?

A better battery life, all-new companion app, superior user-friendliness – the all-new Karoo is Hammerhead’s best unit yet but does it outshine its competitors?

Hammerhead Karoo
(Image credit: Anne-Marije Rook)
Cycling Weekly Verdict

Hammerhead's latest Karoo is its best yet and emerges as a formidable competitor to Garmin and Wahoo’s popular unit. While battery life remains Hammerhead’s Achilles Heel, the computer’s vast array of features, superior user-friendliness and best-in-class navigation make it a worthy contender for cyclists seeking a premium riding experience.

Reasons to buy
  • +

    Superior display

  • +

    Next-level user-friendliness

  • +

    Excellent navigation

  • +

    Packed with features

  • +

    New app

Reasons to avoid
  • -

    Battery life isn't great

  • -

    Takes a minute to power up

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.

In the realm of GPS cycling computers, Garmin's legacy dates back to 2005 when it released the Edge 205 and 305. While these early models primarily focused on tracking basic metrics like speed, distance and time, they laid the groundwork for Garmin's dominance in the market. Over the years, various brands entered the market with head units of their own, but only Wahoo, which came on the market with the ELEMNT computer in 2016, has managed to offer any competition of note.

Enter Hammerhead. Originally a software company focused on creating software applications and platforms aimed at enhancing navigation and route planning for cyclists, Hammerhead came to market with its first Karoo computer in 2017. The Karoo, and its subsequent Karoo 2 upgrade, gained a loyal following thanks to its superior display, advanced navigation capabilities and an Apple-like commitment to software updates. 

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Anne-Marije Rook
North American Editor

Cycling Weekly's North American Editor, Anne-Marije Rook is old school. She holds a degree in journalism and started out as a newspaper reporter — in print! She can even be seen bringing a pen and notepad to the press conference.

Originally from The Netherlands, she grew up a bike commuter and didn't find bike racing until her early twenties when living in Seattle, Washington. Strengthened by the many miles spent darting around Seattle's hilly streets on a steel single speed, Rook's progression in the sport was a quick one. As she competed at the elite level, her journalism career followed, and soon she became a full-time cycling journalist. She's now been a cycling journalist for 11 years.