Garmin Forerunner 265 Review: The Runner's Watch to Beat

Garmin's Forerunner 265 landed as the moment AMOLED arrived in a mid-range running watch, and two years on it is still the one most runners should buy. The screen is the headline: bright, sharp and readable in low winter light without hunting for a backlight button, which sounds trivial until you have squinted at a memory-in-pixel display at 6am in November. Underneath sits Garmin's training software, the actual reason people stay in this ecosystem. At £299 it is not cheap. It is, however, priced well below the 965 while doing nearly everything that watch does.

Who it is for

Runners who train with some structure. If you follow a plan, care whether today should be hard or easy, and want to see whether your fitness is moving, the 265 gives you tools that genuinely change decisions. Triathletes are covered too, with open water swimming and cycling profiles among the 30-plus activity profiles Garmin lists.

It is overkill for walkers and casual gym-goers. If your interest is heart rate zones during a spin class or a treadmill session, our best heart rate monitor guide covers chest straps that do that job more accurately for under fifty quid.

The screen and the hardware

The 1.3in AMOLED at 46mm is the thing you notice in the first ten seconds and keep appreciating for months. Colours are strong, text is crisp, and a wrist flick wakes it instantly. You can run it always-on if you prefer a traditional watch face, at a real cost to battery.

Physically it stays sensible. Forty-seven grams means you forget it overnight, which matters because sleep tracking feeds the recovery numbers. Garmin kept five physical buttons alongside the touchscreen, and anyone who has tried to stop a lap on a touchscreen in the rain with numb fingers will understand why that decision is worth a paragraph. The case is polymer with a plastic bezel, and at £299 it looks it, particularly beside the titanium 965.

Training features that earn their place

Training readiness is the one that changes behaviour. Each morning the watch combines your sleep, recent training load, recovery time and HRV status into a single score, and after a fortnight of calibration it is uncannily good at telling you the session you had planned is a bad idea. The morning report puts that in front of you before you have made a decision you regret.

HRV status needs about three weeks of consistent overnight wear before it gives you a baseline, so do not judge it in week one. Once established, it flags the run of poor nights or the incoming cold before you consciously notice either.

Daily suggested workouts adapt to what you actually did rather than what a plan said you should have done, and the race widget builds toward a date you enter, adjusting as your fitness moves. None of it replaces a coach. All of it is better than guessing.

Accuracy, honestly

GPS is excellent. Multi-band reception with SatIQ switching means city routes between tall buildings and runs under heavy tree cover track far more cleanly than single-band watches manage, and SatIQ only burns the extra battery when conditions call for it.

Wrist heart rate is a different story, and it is worth being straight about it. Optical sensors read blood flow through the skin and get confused by wrist flexion, cold and sudden intensity changes, which is why validation work comparing wrist-worn devices with chest straps against ECG consistently places straps closer to the reference, and why a study of wearable heart rate accuracy in cardiac rehabilitation found accuracy varied by both device and activity. For easy and steady running the 265 is fine. For 400m repeats, pair a chest strap; the watch takes an external sensor in seconds.

Battery life in practice

Garmin's 13 days assumes gesture-based backlight and light use. Turn on always-on display, take notifications from a busy phone, and run four times a week, and most owners report something in the five to seven day range. That is still a week between charges on a bright AMOLED watch, which two years ago would have sounded optimistic. GPS runtime of up to 20 hours covers a marathon several times over, though music playback while running drags it down sharply.

Where it sits

Against the Forerunner 965, you lose maps, screen size and the titanium bezel, and you keep essentially the whole training suite. Unless you navigate unfamiliar trails, the 265 is the better value by a distance. Against the older 255, the AMOLED screen is the upgrade, and the 255 remains a bargain when it is discounted.

For treadmill work the 265 tracks distance from wrist movement, and it improves as you calibrate it against known distances, though it will never match a foot pod for accuracy on a belt. If most of your mileage happens indoors, spending less on the watch and more on the machine is the smarter allocation; our treadmill reviews and the best incline treadmill guide are the place to start. Whatever you use it for, the target worth hitting remains the NHS guidance of 150 minutes of moderate activity a week, and a watch that nags you gently toward it earns its keep.

Check price on Amazon

Recommended reads

1. The best heart rate monitors in the UK
2. The best incline treadmills in the UK
3. Rowing machine vs running
4. The best treadmills for home use
5. More treadmill reviews and guides