Curved treadmills went from sprint labs and CrossFit boxes into home gyms, and they cost two to three times as much as a typical motorized treadmill. So are they worth it? For the right person, yes. For others, a regular treadmill is the better buy. Here is how they work, what they do well, where they fall short, and how to choose one.
How a curved treadmill works
A curved treadmill has no motor. The running surface is a curved belt on bearings, and you power it with your own stride. Step toward the front of the curve and the belt speeds up; drift toward the back and it slows down. There are no speed buttons: you change pace simply by where you run on the curve.
Because the belt only moves when you push it, every step takes more effort than on a motorized belt that pulls the ground under you. That is the core of both its benefits and its drawbacks.
The benefits
- Harder workouts in less time. Driving the belt yourself makes the same pace more demanding. Manufacturers claim higher calorie burn than a motorized treadmill; treat exact percentages as marketing, but the extra effort is real.
- Natural sprint training. You can go from a walk to an all-out sprint instantly, with no waiting for a motor to ramp up. That makes curved treadmills a favorite for interval and sprint work.
- Encourages a forefoot stride. The curve naturally pushes you onto the balls of your feet, which many runners and coaches like for form work.
- No electricity. Put it in a garage, basement or outdoor space without an outlet, and there is no motor to burn out.
- Built for heavy use. Commercial style frames are designed for gyms and years of hard training.
The drawbacks
- Price. Expect to pay far more than for a home motorized treadmill.
- Harder for slow, steady walking. Holding a constant easy pace takes practice, since the belt responds to every change in your position. Walkers who want to zone out may prefer a motorized treadmill.
- No incline programs. You control intensity with pace and, on some models, belt resistance, not with automatic incline workouts.
- Weight and size. These are heavy machines. Plan where it will live before it arrives.
- A learning curve. Start at a walk holding the handrails until you get a feel for how the belt responds.
Who it is worth it for
- Athletes and runners who do sprints, intervals and HIIT
- Anyone building a garage gym without a nearby outlet
- People who want a machine that will last through years of hard use
- Coaches, trainers and small gyms
Probably not worth it for: anyone who mainly walks at a steady pace while reading or watching TV, or who needs preset incline and speed programs. A motorized treadmill fits that better.
Tru Grit Grit Runner vs Grit Runner Elite
| Grit Runner (RUNN1000) | Grit Runner Elite (RUNN-1002) | |
|---|---|---|
| Price | $2,495 | $3,495 |
| Resistance | 6 levels (run, walk and sled push settings) | 4 levels |
| Console | Battery powered LCD: time, distance, pace, speed, calories | LCD with Bluetooth and ANT+ |
| Weight capacity | 400 lb | See product page |
| Footprint | See product page | 66 in long, 31.5 in wide deck, 55.5 in tall (14.5 sq ft) |
| Belt | Curved slat belt | Dual belt system with 124 sealed bearings |
| Machine weight | See product page | 291 lb |
The Grit Runner is the value pick with more resistance settings, including heavy settings for sled push work. The Elite adds a dual belt system and a connected console for tracking workouts in apps that support Bluetooth or ANT+.
Space and setup tips
- Leave clear space behind the treadmill and at the sides, and put it on a flat, level floor. Rubber gym flooring protects the floor and cuts noise.
- Check ceiling height: add the deck height to your height plus a few inches of bounce room.
- Plan the delivery path. At close to 300 pounds, the Elite needs at least two people to move.
Build out the rest of your home gym
Pair a curved treadmill with the Grit Bike air bike or the ROWW1000 rower for conditioning, and a foldable wall-mounted power rack for strength work that folds flat when you need the floor space.
Frequently asked questions
Can you walk on a curved treadmill?
Yes. Walking toward the back of the curve keeps the belt slow. It takes a few sessions to find a steady walking rhythm.
Do curved treadmills burn more calories?
Moving the belt yourself takes more effort than running on a motorized belt at the same pace, so most people work harder. Manufacturer percentages are claims, not guarantees; your results depend on pace and effort.
Are curved treadmills easier on joints?
Some runners find them more comfortable because the curve promotes a shorter, forefoot stride. Everyone is different, so if you have joint problems, check with your doctor or physical therapist before starting a new routine.
Do they need power?
No. The belt is powered by you, and the display runs on batteries or its own generator depending on the model.
Questions about which model fits your space? Call 866-777-2590 or browse all Tru Grit Fitness equipment.
