Garmin Forerunner 10 GPS watch review

Garmin’s excellent new Forerunner 10 GPS: if you’re happy to run without heart rate then you’ll need a good reason to look beyond …

GPS running watch is simple, functional, and tremendous value

If you’re happy to run without a heart rate monitor then you’ll need a good reason to look beyond the excellent new Garmin Forerunner 10.

It’s light, it’s accurate, it’s very straightforward to use, and best of all you can be running with invaluable GPS data for less than £100!

Garmin Forerunner 10 black pink green review main image

Sadly I’m an indifferent runner (44:15 for 10km – this year’s aim is to go under 20:00 for 5km) but part of that is because I’ve never been satisfied with either a phone or my Garmin Edge bike GPS when running… and I’m one of those geeks who is motivated by the data.

Suffice to say, that’s all changed.

Garmin Forerunner 10 GPS trace on a map

Lock-on and accuracy

Amazingly for such a small watch, the Forerunner 10 has an extremely fast lock-on time (making my phone and especially my wife’s old Forerunner 305 look embarrassing!).

It has also demonstrated good accuracy under foliage – I’ve included a mouse-rollover screen grab comparing my expensive phone and the Forerunner 10 on the same section of wooded path: really rather good (roll over the captions to flip the image).

Garmin Forerunner 10 review: maps

Select to view: [Garmin Forerunner 10] [Android GPS phone app]

Compared to bigger GPS aerials (as on my Edge 705) the Forerunner probably does suffer, but it’s clearly no slouch!

Data screens

The Forerunner 10 is a physically compact watch and has been designed (and delivers) around a premise of ease of use.

There are no complex data screens to set up. You just choose which of the two following pairs of data to toggle between:

  • Time & Distance
  • Time & Current Pace
  • Time & Calories
  • Pace & Distance
  • Pace & Calories
  • Distance & Calories

So, for instance, you can have the screen showing distance and calories burned (how far you’ve come), then flip it to time and current pace (how far you’ve got to go, and how quickly you’re going there)…


While the screen isn’t the biggest, the fact that it’s displaying a limited amount of information makes it particularly clear.


When you can easily pay three times as much for a GPS, it might be natural to think of the Garmin Forerunner 10 as a cheap and cut-down (possibly inadequate) option.

For most people, nothing could be further from the truth.

The Forerunner 10 supports key functionality from far more expensive models and this is one thing that sets it aside from other entry-level competitors.

Run/Walk (simple intervals)

The Forerunner 10 supports Run/Walk type workouts, allowing you to easily input the length of time for both interval and recovery, which it then cycles between. For instance: five minutes running with one minute rest between each (it doesn’t care if you actually ‘walk’ – you can do a proper sprint interval session if you wish).

The only limitation is that you have to specify the intervals by time (i.e. 8 minutes if you want to run one mile at 08:00 pace) which could require a bit of mental arithmetic for fractions of a mile, or fractions of a minute pace.

Garmin Forerunner 10 walk/run intervals plotted on a chart

Only simple (identical length) intervals are supported within any given workout, so you can’t do pyramids (run for 5 minutes, rest, 4 minutes, rest, etc.) but unless you get extremely keen and extremely fit, it’s all you really need from a running watch.

Virtual Pacer

Another great feature supported by the Forerunner 10 is the virtual pacer.

This is just what it sounds like – input a desired speed into the watch and it will tell you if you are going too fast or too slow while you train.

Unlike a real pacer the Forerunner doesn’t adjust for gradient, so there are limits to how useful it is (on a circular and hilly cross-country route, it either beeped at me to speed up on the climbs or slow down on the descents!)


Despite that, for training on the flat I find this feature absolutely invaluable – running intervals at target pace is just so easy now. Not so much when you’re trying to wipe the sweat off your touchscreen phone so you can unlock it and see what’s going on…

Irritatingly however, enabling the virtual pacer cancels your walk/run intervals, and vice-versa. This is very frustrating because otherwise the Forerunner 10 would be almost perfect – why on earth Garmin didn’t wire the pacer to apply only to the ‘run’ part of walk/run is beyond me.

Auto Lap

It’s very easy to hit the lap button on the Forerunner 10 whenever you like – but to save you having to take your eyes off the road and count down every time, you can just tell the watch to lap automatically every mile (or kilometer).

Unlike more expensive watches, you can’t tell it to lap using GPS position (i.e. every time you run a circuit of a park), just by distance, and you can’t change the distance to be anything other than 1 mile/kilometer.

You’re most likely to want to look at splits per mile (or kilometer) anyway, so this is only a minor niggle for me. My Edge has the ability to lap by GPS position and I’ve rarely used it…

Auto Pause

Finally there’s the auto pause function. This simply stops the clock on your session when your speed drops below walking speed (for instance, because you’re waiting to cross a road) and magically starts it again when you speed up.

You may prefer to pause manually (or prefer to record the whole time, so you have a better idea how much rest you had while running) but as an urban runner, this definitely qualifies as a nice to have in my book.

History and Records

One limitation of Garmin’s Forerunner 10 is the history size: it will only recall and display the last seven runs through the history menu. However, the eighth and older runs are not deleted and can be synced up with your computer at any time.

It’s bizarre the number of reviews that seem to suggest the watch itself is limited to seven runs before it starts overwriting itself… based on the size of the .FIT files generated and the free space when I mount the Forerunner 10 as a USB drive, I estimate around 50 hours of running could be stored before it would physically run out of space.

The Record feature is also really nice- it remembers your fastest time at various distances (regardless of how long ago your PB was – i.e. not just within the 7 current history workouts) and will let you know when you’ve broken it so you can immediately celebrate!

Handy for knowing whether you just set a Park Run PB before you even get your token…

Charging, Syncing

The Forerunner 10 comes with a small USB harness that plugs into any computer to both charge and sync the device.

It doesn’t take too long to charge, and the watch appears as a USB mass storage device (just like a USB pen) so you can simply copy your workout .FIT files manually – alternatively, the Garmin Communicator browser plugin can take care of this all for you.


Needless to say, a lot has been written elsewhere about Garmin Connect (or Strava, or MapMyRun, or…) so I won’t go into specifics regarding *what* service you should sync with.

However, in case you’re not familiar with GPS sports devices at all, syncing with one of these free community sites uploads the ‘trace’ of your run and it can then be viewed on a map, as part of a training calendar, and (sometimes) analysed for further data.

Strava screenshot of a Garmin Forerunner 10 trace

Strava, for instance, takes into account the gradient you were running over and produces a “grade adjusted” equivalent pace for each lap; if you run uphill for a mile then turn around and run back down, you can still compare your relative efforts. 🙂


With the Forerunner 10, Garmin have absolutely nailed the useability of a GPS watch, minimised physical bulk and weight, but critically maintained GPS accuracy and a blazing fast satellite lock that puts some other models to shame.

This modest size and fact that you can use the Forerunner 10 as an ordinary watch make it hugely more practical than something like the old Forerunner 305:


Training functions such as Walk/Run, Virtual Pacer, Auto-lap and auto-pause are well thought out, work well, and add real value (one or two of the above I just couldn’t be without). The inability to use the pacer for the run sections of walk/run intervals is the only major wobble in a standout product.

The only reason I’d recommend spending more would be to access Ant+ connectivity for accessories (ie. a heart rate monitor), but it’s a significant jump – the HR belt alone sells for £40 or more.

If you don’t want to compromise the elegance and simplicity of the Garmin Forerunner 10 and can live without an HRM, this really is the watch for you…

I bought my Garmin Forerunner 10 for a good price on Wiggle. While you may find it a couple of pounds cheaper elsewhere, I like the reassurance of Wiggle’s no quibble free returns policy with Collect+. That’s worth a little extra in my opinion.

For a keen runner, this is one purchase you won’t regret! Buy yours now in black or in green

Got any comments or questions? Please feel free to get in touch using the comments form below, and I’ll get back to you!