The best outdoor watches of 2025 for training, navigation and battery life

Thinking that the 9 Peak Pro is too dainty and pretty to hold a candle to the others here is a mistake. There are two versions of it: the standard and the Titanium. The latter has a titanium bezel, compared to stainless steel on the standard version. We’ve been testing the standard version, dropping it on trails and ‘accidentally’ grazing it against hard surfaces. The sapphire glass face hasn’t suffered a scratch.  

Suunto has improved the interface of the 9 Peak Pro compared with the 9 Peak. Everything is much clearer in terms of display and menu organisation. It still takes a few days of playing around with it to feel at home with the system, but it’s a big improvement. Once you’re used to it, you can configure the interface as you please and your recently selected sports are always kept at the top of the sports menu. 

However, we did find it takes a bit longer to sync with its app and to locate our position than the Garmin watches. But it's extremely accurate and the Suunto app is arguably the best here. It opens onto your activity archive instead of irrelevant stats. You can therefore instantly look at the activities you’ve done. You can also easily toggle between decent topographical mapping and satellite imagery and watch walk-throughs of your route to see your pace, altitude and heart rate as you walk. 

Read our full Suunto 9 Peak Pro review

Garmin’s Fenix range is fantastic but predictably expensive. Garmin also produces the Instinct 2 range, which is available at about half the price of the Fenix 7. In terms of functional hiking and trail running features, the Instinct 2 has everything you need. In fact, it’s hard to find something we’ve used on the Fenix that isn’t also available on the Instinct 2. 

Like the Fenix, there are Solar and lightweight S versions of the Instinct 2. In terms of features, there’s still a wealth of GPS-trackable sports modes including five running types. You can also use the Instinct 2 for receiving phone notifications, making payments, and controlling music. And if you want to customise it further, you can do so by heading to the Connect IQ Store to add widgets, extra apps, and the like.    

For the value this watch offers, it’s hard to fault until you turn to the app. The Instinct 2 uses the Garmin Connect app, which is so-so. It prioritises stats and notifications over your activity archive, and the archive list shows each activity by its stats rather than the instant visual of the route, as seen on the others. It’s also fiddly to get to your cumulative miles for week, month and year. 

But on the whole, the Instinct 2 is excellent. It’s hard to justify paying more for the top-end models here unless you’re a serious athlete. 

Read our full Garmin Instinct 2 review

Surprise! We've also just tested out the next in the Instinct series - but we're keeping the Instinct 2 in this list because it is excellent value - especially right now.

The Garmin Instinct 3 Solar builds on the foundation set by the Instinct 2 Solar, offering a robust, lightweight option for outdoor adventurers, priced at £349.99. It’s an ideal choice for anyone who needs a durable sports watch for activities like hiking, trail running, and kayaking, but its improvements set it apart from its predecessor in meaningful ways.

While the Instinct 2 Solar was already a solid all-rounder with good GPS accuracy and a rugged build, the Instinct 3 Solar brings several notable upgrades. First, the GPS performance has improved, now featuring multi-band GPS for better accuracy in challenging environments, compared to the more basic GPS, GLONASS, and Galileo setup on the Instinct 2. This makes the Instinct 3 more reliable in dense forests or urban areas, addressing one of the key weaknesses of the Instinct 2.

The design remains largely the same: the lightweight 52g frame is incredibly comfortable, and the 23mm monochrome screen is still basic, but more efficient. However, the Instinct 3 Solar takes a significant step forward with solar charging, allowing for up to 130 hours of GPS usage, which is a massive leap from the 30 hours offered by the Instinct 2 in full GPS mode.

Despite these improvements, the Instinct 3 Solar still keeps things simple – there are no AMOLED displays or high-end maps like those found on the Garmin Fenix 7 Pro or Polar Grit X2 Pro. If you’re looking for premium navigation features or a more vivid display, those models may be a better fit.

However, for a rugged, lightweight, and reliable outdoor watch with excellent battery life, the Instinct 3 Solar is an excellent choice, especially for users who loved the Instinct 2 but want enhanced GPS accuracy and extended battery life.

Read our full Garmin Instinct 3 Solar review

One of the first things that struck us about the Coros Apex 2 Pro is how little you have to charge it. This impressive GPS outdoor sports watch boasts 75 hours of battery life in standard GPS mode. We can confirm that we went more than three weeks before recharging, despite using it on plenty of local walks and runs and spending countless hours fiddling with its features. 

Many outdoor enthusiasts look at Coros as a slightly more affordable alternative to Garmin. So while the Apex 2 Pro seems pricey, you get plenty for your money here. Firstly it looks great with a lightweight and comfortable nylon strap, 1.3-inch sapphire glass screen, plus chunky buttons and a titanium dial you can operate using a pair of thinnish gloves.

In terms of functionality for hillwalking, the Coros 2’s redesigned dual GPS antenna feels reliable and the offline maps are decent (if not particularly detailed). It isn’t classed as fully waterproof but has been built to withstand water to 50m and temperatures ranging from -30°C to 50°C. So no worries there. 

In terms of nice extra touches, you also get a touchscreen, MP3 music player, night mode, blood oxygen sensors and heart rate monitors, plus much more we haven’t discovered yet. If you want a stronger endorsement than ours, this is also the watch brand of choice for mountain-running Superman Kilian Jornet, so it must be doing something right!

For most walkers, this review could begin and end here. The T-Rex Pro is tough, chunky, reliable, accurate, and it does exactly what you need it to: tracks, records miles (with cumulative stats for weeks, months and years, making it ideal for #walk1000miles), and presents the data very simply on a free app called Zepp. 

The buttons are simple, and crucially, it’s a fraction of the price of its big-name rivals. In fact, it’s the same price as many far more basic trackers. So what are the drawbacks? Firstly, cosmetics: it looks cheap. The watchface options are naff, and its polycarbonate shell feels plasticky compared to the titanium its rivals use (although it’s still very robust and light). Secondly, it’s from a low-cost Chinese tech company rather than a dedicated outdoor brand, which may impact on aftercare and longevity.  

So this is ‘just’ a tracking watch rather than a device that learns about you and wants to become part of your life. But in a year of intensive use, the T-Rex Pro has never let us down on speed of location-fixing, accuracy of recording, or battery life. On the latter, it can’t compete with the vast battery figures of its rivals, but if fully juiced it will track you on at least six five-mile walks before needing any kind of top-up, which seems fine and fair to us. So if you don’t need all the bells and whistles, the T-Rex Pro is an absolute no-brainer.

This Casio G-Shock watch is a uniquely rugged sports watch. Fans of the G-Shock range will know that in terms of styling, they have the opposite approach to the Suunto 9 Peak Pro. The GG-B100 is beefy and chunky and proudly so.  

This watch doesn’t have a heart rate monitor or built-in sports apps like the others. Instead, it has a magnetic compass, altimeter, barometer, accelerometer, and gyrometer. It has a step counter and thermometer too. In terms of functionality then, it’s relatively straightforward. But you can still connect the GG-B100 to a smartphone via Bluetooth to record activity logs and adjust the watch. The app is quite amusing. It has the appearance of a war strategy game and is easy to use but also quite basic. 

Toughness is important here. The case looks like carbon fibre, and it says ‘Carbon Core Guard’ on the underside. It’s actually a carbon fibre-reinforced resin but is still mighty tough. The mineral glass is scratch-resistant and protected by the protruding bezel. The Casio is water-resistant down to 200m. In short, it’s the most rugged watch here. 
This type of watch will suit some and not others. But what will appeal to all is the exquisite level to which it’s made and how incredibly comfortable it is to wear.  

Read our full Casio G-Shock Mudmaster GG-B100 review

Our testers loved this watch so much that we just had to sneak it onto this list as a second Suunto offering. The Vertical smartwatch marks an impressive leap for the Finnish brand as they've refined their interface to a super intuitive and accessible level.

A responsive (and tough) touchscreen combines with three side buttons for a simple set-up. Move up and down and select with the buttons; drag maps around, adjust music volumes, and deal with text messages by tapping the screen. Easy as pie. Though it can take a while to scroll through the 97(!) pre-set sport modes with additional customisation options.

The construction of the Vertical is excellent and durable, though this does give it a little heft. Both versions come with sapphire glass, which can bang, scrape or crunch against dense gabbro and still look like it’s ready for Oscar night. With military-grade testing and waterproofing down to 100m, this watch can accompany you on some seriously hardcore adventures.

Read our full Suunto Vertical smartwatchreview

Our editor, Oli, has been trying his hardest to wreck this watch for a decade now. It's been used and abused over multiple dedicated testing trips, from the north face of Ben Nevis and Sharp Edge to the river behind our offices. Trust us, that's a pretty gnarly river. The only thing this rigorous testing managed to accomplish was a bit of a scuffed face – which Elliot Brown were happy to replace!

The whole Canford range is fantastic, with elegant colour and material variations throughout; We've tested the 202-006-B07 model. Catchy name, right? Although we can't get enough of this stainless steel strapped model, you may want to check out the Mountain Rescue Special Edition, which is even more durable.

There are no hidden functions on the Canford (it basically tells the time and date), but it is water-resistant and shock-resistant – and it has a solid steel bracelet so tough you could hang your body weight from it – don’t, though! The micro-adjustable extension clasp allows you to fine-tune the tightness of the strap if you get hot and sweaty, and our highest compliment to the Canford is that you'll hardly notice it until you need to do a time check.

If you're searching for classy timepiece that can handle mountain terrain, you’ll struggle to beat this. Simple, tough, beautiful.