Sportstech F37 Review: A Big-Surface Folding Treadmill

The Sportstech F37 is a full-size folding treadmill aimed at people who want to genuinely run at home, not just walk. It sits in the mid-range of the market, above the flimsy sub-£300 folding machines and below premium gym-grade treadmills, and it has built a strong following on Amazon UK with hundreds of reviews. The headline verdict is that it punches above its price: a big cushioned running deck, a 20 km/h top speed and a 15% incline give it a proper running-machine feel that budget folders simply cannot match. The trade-offs are the ones you would expect from a serious home treadmill, namely its size, its weight and a two-person assembly.

What you are really paying for is the running surface and the motor. The 130cm long belt gives enough room for a natural stride, the multi-layer deck with eight cushioning zones takes the sting out of each footfall, and the DC motor pulls to a genuine running pace rather than a fast walk. Sportstech is a German brand and the F37 carries TÜV/GS safety certification, which is a reassuring sign on a machine you will be running on at speed. The catch is that all of that comes in a heavy, sizeable package that dominates a room even when folded.

Who it is for

The F37 makes the most sense for runners and mixed walk-run trainers who want a machine they can use hard at home and have the floor space for a full-size treadmill. The big deck, high top speed and steep incline are wasted on someone who only ever strolls, and for pure walking a cheaper or more compact treadmill saves money and space. If you are after a slim under-desk walker, our best walking pad UK guide is a better starting point. But if you want to train for a 5k or 10k indoors, do interval sessions and walk on incline, this is a lot of capable treadmill for the money.

Build and feel

This is where the F37 earns its keep. The frame feels solid and stable underfoot, with far less of the wobble and flex you get on cheap folding treadmills when you pick up the pace. The running belt is wide and long enough for a natural stride, and the eight-zone cushioning genuinely takes the edge off, so your knees and shins thank you after a longer session compared with pounding a hard, thin deck. Owners consistently praise how sturdy it feels for a folding machine.

The flip side of that solidity is bulk. This is a heavy, full-size treadmill, so assembly takes time and really does need two people, and once built it is not something you will be casually moving around. It folds vertically and has wheels, but plan for it to live in one spot rather than being tucked in a cupboard.

Performance

In use, the F37 behaves like a proper running machine rather than a walking aid. The belt runs smoothly, the speed and incline changes are quick enough for interval work, and the cushioning strikes a good balance between being soft on the joints and firm enough to feel stable. Running at pace on incline is where the extra deck length and stability really show, and it is comfortably capable of the kind of sessions that would rattle a budget machine to pieces.

Treadmill training like this is a genuinely effective way to protect your health, not just your fitness. Regular running is linked to meaningfully lower all-cause and cardiovascular mortality (leisure-time running and mortality), and even brisk treadmill walking pace is a strong marker of long-term health (treadmill walking speed and survival). A machine that makes you want to run indoors on wet, dark UK evenings is worth a lot.

The honest limits are around the edges rather than the core experience. The DC motor is well suited to home use but is not a gym-grade unit built for all-day continuous running, and it gets noticeably louder at top speed than a premium treadmill. The 7.5 inch console and the app also feel dated next to the big touchscreens on machines costing two or three times as much, though they do the job of showing your stats and running the programs.

App, extras and value

The F37 pairs with the Kinomap app over Bluetooth, which adds virtual routes and video-led sessions, and it has twelve built-in programs, a chest-strap pulse belt, speakers and a tablet holder if you would rather watch your own screen. None of it is cutting edge, but it is a sensible spread of features for the price, and most owners settle into the manual controls and their favourite app rather than fussing over the on-board software.

On value, the F37 is a strong buy in its class. It regularly sits in the mid-range folding-treadmill bracket while offering a bigger deck, a higher top speed and a steeper incline than many machines around its price, which is exactly why it reviews so well. It is not the machine for you if you only ever walk or if floor space is tight, but for a home runner who wants real capability without paying gym-grade money, it delivers. For alternatives at different budgets, see our best treadmills for home use and best treadmill under 1000 guides, or browse the full treadmills section.