We've tested dozens of treadmills — here's our 6 top picks for your home gym

Collage of 3G Cardio Elite Runner Treadmill

Alyssa Powell/Business Insider

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Few exercise machines endure the changing landscape of at-home fitness like the treadmill. Not only do they help runners prepare for events like 5Ks or half marathons but they work well for anyone looking to maintain cardio fitness.

And whether or not they have high-tech features like touchscreen displays or live-streamed classes, every treadmill offers the same simple user experience; just run or walk on its moving belt and the workout begins.

As Fitness Editor for the Insider Reviews team, I've run hundreds (if not thousands) of miles on all sorts of treadmills. For every mile logged on something like NordicTrack's Commercial 2950, I've run an equal amount (if not many more) on the basic treadmills you might find at a neighborhood gym.

I leaned on this experience to compile the following list of my six favorites. I've also included answers to a few FAQs, as well as insight into how I test treadmills, at the end of this guide.

Learn more about how Insider Reviews tests fitness products.

Here are the best treadmills:

Best overall: ProForm Pro 2000 Treadmill, $1,399.99 from Amazon
The ProForm Pro 2000 Treadmill is a race-trainers dream that's versatile enough for the casual runner, too.

Best smart: NordicTrack Commercial 2950, $2,957.53 from Amazon
NordicTrack's Commercial 2950 is a highly versatile treadmill that offers automatic incline control, an HD 22-inch touchscreen, and a deep library of interactive classes from iFit.

Best budget: Horizon Fitness T101-04 Treadmill, $649 from Horizon Fitness
Compared to other budget fold-up treadmills, the Horizon Fitness T101-04 Treadmill has nice features and good performance.

Best folding: LifeSpan TR3000i Folding Treadmill, $1,239.99 from LifeSpan
The LifeSpan TR3000i uses an extensive shock absorption system to take some pressure off your joints while running.

Best compact: Cubii Pro, $344 from Amazon
The Cubii Pro is an easy-to-use, under desk exercise machine that's more of an elliptical than a treadmill but still allows you to log some quality cardio no matter if you're sitting down for lunch or powering through a backlog of emails.

Best for quiet workouts: 3G Cardio Elite Runner Treadmill, $3,699 from Amazon
The 3G Cardio Elite Runner Treadmill delivers excellent performance and runs quieter than most treadmills.

Best treadmill overall

ProForm

The ProForm Pro 2000 Treadmill is a race-trainers dream that's versatile enough for the casual runner, too.

Runners looking for a treadmill with good all-around training capabilities and a host of useful features will like the reasonably-priced ProForm Pro 2000 Treadmill.

It has a 3.5-horsepower motor, which allows it to stand up to daily use, and it boasts a belt deck that measures 22 by 60 inches, which is perfect for most runners. When you're training for races with hills, you'll appreciate this treadmill's ability to reach a 15% incline and a 3% decline, which better simulates hills than most other treadmills — it's easy to adjust it both up and down, too, even while running.

The ProForm Pro 2000 also has a number of tech features, including a 7-inch screen that streams iFit's interactive workouts, a music port for iPods, and a built-in fan that works well to keep you (somewhat) cool as you run. Its tread features what the brand calls ProShox Cushioning, which is designed to lessen the impact on your feet and knees while running. Though a true, long-term test of this would better judge its viability, even a handful of runs on it showed that this made a difference (even if it was minimal).

What truly makes this treadmill stand out is its inclusion of the above-mentioned iFit workouts. Not only are these excellent ways to keep motivated, but the platform offers some genuinely unique workouts. One day you could be running through France and the next, Vietnam. That globe-spanning adds a level of quality to the workouts you'd have a hard time finding elsewhere.

Another perk of the iFit workouts is how the trainers leading the runs entirely control the incline, decline, and speed, allowing you to focus strictly on running. This is something that's incredibly welcome as fumbling with a treadmill's controls while in a full stride isn't always the most fun (and can easily mess with your cadence).

Its price is also in the range of what you'd expect to pay for a full-featured treadmill. Most interactive workout machines run in the $2,000 range, and the fact this undercuts that average by a few hundred dollars makes it an appealing choice.

Best smart treadmill

NordicTrack

NordicTrack's Commercial 2950 is a highly versatile treadmill that offers automatic incline control, an HD 22-inch touchscreen, and a deep library of interactive classes from iFit.

The Commercial 2950 treadmill from NordicTrack is one of the most full-featured machines I've tested, coming with everything from automatic incline control and Bluetooth connectivity to Google Maps integration and personalized workout stats. My favorite feature, however, is its access to iFit's expansive library of interactive workouts.

With iFit, you're able to run essentially anywhere, yet still from the comfort of your home. The service's roster of trainers offers a wide range of run types that aren't just confined to a studio or their home (where they do film some of the classes). Rather, you could be running through real-world locales that offer a breath of fresh air from standard treadmill routines. I found this to be a welcome deviation from the tediousness of normal running.

In addition to those workouts, the rest of the 2950 is premium. The automatically adjusting resistance feature mentioned above is a game-changer, and, as the name suggests, allows the trainers to fully control the incline, decline, and speed of the treadmill as you run along — all you have to worry about is just running.

One nitpick could be that the iFit interface can be a little clunky and slow to use sometimes, and the service occasionally crashed mid-workout (though did tend to load right back up in the exact same spot I was running). This didn't happen enough to be concerning, nor did it detract from my overall experience.

What holds the 2950 back from nabbing the top spot in this guide is its price, which is roughly double the cost of the ProForm Pro 2000. Still, it's worth the investment for those who want access to a huge library of interactive classes and a premium-built treadmill.

Best budget treadmill

Horizon Fitness

Compared to other budget fold-up treadmills, the Horizon Fitness T101-04 Treadmill has nice features and good performance.

Saving space with a fold-up treadmill is a great idea for a lot of people. However, most fold-up treadmills don't offer a lot of power.

With those natural limitations of fold-up treadmills in mind, you'll like the Horizon Fitness T101-04 Treadmill, which works well for walkers and anyone on a budget (and isn't really made for runners looking for high-end workouts). Think of it as like an entry-level treadmill, or something that can be a complement to a wider range of at-home equipment.

It has a 55-inch belt length, a maximum 10 mph speed, and a 2.25-horsepower motor. The T101-04 treadmill is easy to fold up for storage, which is great for anyone with minimal space in their home or apartment.

You can't beat the value, too. If you want something simple, straightforward, and cost-effective that has the basic features necessary for just running and walking, the T101-04 from Horizon Fitness is the treadmill you need.

Best upright folding treadmill

LifeSpan

The LifeSpan TR3000i uses an extensive shock absorption system to take some pressure off your joints while running.

Some people dislike working out on a treadmill because of the pressure it places on their joints. The LifeSpan TR3000i attempts to alleviate some of this pressure by using a shock absorption system in the treadmill's deck.

It has a 20 x 56-inch running surface, 15 incline levels, and a 6-inch LCD screen that shows your time, calories, distance covered, steps, heart rate, speed, and incline. The eight shock absorber elements in the deck ensure that it remains both stable and comfortable to run on.

As mentioned on other models, long-term testing would be a better indicator of just how well the shock-absorbing works, but it's easy to notice the difference in the TR3000i compared to others. If you at all have foot, knee, or joint issues, you'll want to at least consider this one when shopping.

Beyond its shock-absorbing capabilities, the TR3000i has a number of fun features to give you variety in your workouts, too, including a tablet holder, a USB charging port, and compatibility with iPods. It also has built-in speakers, folds up for easy storage, and physical console buttons that are sometimes easier to use when making adjustments than only relying on the touchscreen.

Best compact treadmill

Cubii

The Cubii Pro is an easy-to-use, under desk exercise machine that's more of an elliptical than a treadmill but still allows you to log some quality cardio no matter if you're sitting down for lunch or powering through a backlog of emails.

Though the Cubii Pro isn't exactly a treadmill in the traditional sense (and is more of an elliptical style machine than anything else), its unobtrusive nature makes it a convenient addition to anyone's home gym. The machine simply sits on the floor, be it under a desk, next to a coffee table, or literally anywhere around the house, and lets you pedal away for as long as you like.

The machine delivers low-impact cardio that may benefit those unable to run on a treadmill due to sore joints, and its quiet operation even allows it to be used while watching TV, talking on the phone, or listening to music. With eight different levels of resistance, it affords as easy or as difficult a workout as you like, too.

A companion smartphone application lets you keep track of all your logged workouts and lets you set weekly and monthly goals or share your progress with friends. The app is also compatible with services like Fitbit or Apple HealthKit, so if you prefer the interface of those, all workout data can easily sync to them.

At $344, it's certainly not a drop in the bucket but it is far cheaper than even the budget model on this list. For convenient, low-impact cardio exercise, the Cubii Pro is as versatile and easy to use as it gets.

Best treadmill for quiet workouts

3G Cardio

The 3G Cardio Elite Runner Treadmill delivers excellent performance and runs quieter than most treadmills.

Few treadmills made for use at home will deliver the kind of quiet performance that the 3G Cardio Elite Runner Treadmill delivers. It's made for tall or heavy runners looking for a tough workout, but you'll pay more than $3,000 for the kind of quality that this 3G Cardio unit delivers.

It has an Ortho Flex Shock suspension system to minimize the stress of impact for runners, and the 22 by 62-inch platform is perfect for running.

The 3G Cardio comes with many pre-programmed workouts and a fitness level test. You have access to speed and elevation settings, heart rate control, and workout customization.  This treadmill also has a 4.0 horsepower motor and 3-inch rollers for great performance.

As you would expect with a treadmill with such a high price point, the 3G Cardio Elite consists of thick steel tubing in the frame. It's also rather expensive, so this is really only for serious runners who want a treadmill that will last a lifetime.

How I test treadmills

Alyssa Powell/Business Insider

Each treadmill featured in this guide went through a series of extensive tests (i.e. I ran on them a lot) to see how well they compared across these four categories:Performance, features, quality,andvalue. Here's how the categories specifically factored into which treadmills made the cut:

Performance:How a treadmill performs comes down to a few basic aspects, including how comfortable it is to run on (and how shock absorbing it is), if it's able to avoid sounding like you're loudly pounding the ground with each step, what its tread feels like underfoot, and how wide the running area is. Though not all treadmills reliably check each of these boxes, a healthy combination of at least three of those often translates to high quality.

Features:Some modern treadmills, like those from NordicTrack or ProForm, feature a built-in interactive screen that streams workouts, tracks output metrics, and improves the treadmill's performance. For models that don't have a screen, I looked at how intuitive it was to increase and decrease the treadmill's speed and whether it offered an incline or decline mode. Even those that aren't decked out with the ability to stream workouts are still feature-heavy enough to warrant a spot in your home gym.

Quality:If used often, treadmills can take a consistent beating, mostly due to a runner pounding on it step after step after step. This means the best treadmills should feature a sturdy and durable tread, a high-quality design that won't become compromised even after a full year or more of use, and that features an interface or series of buttons and dials that can avoid popping off or being unusable.

Value:The value of a treadmill is less about its sticker price and more so the combination of the three categories above compared to its initial (and sometimes recurring) investment. I factored in everything when selecting treadmills across each featured category and often feel that it's worth it to spend a little more money on a product that's designed to last than to spend less, more often on something inferior.

FAQs

What types of treadmills are there?

Basic: The most basic type of treadmill only works for walkers. They will have simple tracking features, such as speed, distance, and time. Most basic units will have a short bed that works better for a walker's stride than for running.

And you'll find limited shock absorption features here, which isn't great for runners. Such treadmills will fold up for easy storage (although some more expensive treadmills also can fold up for storage).

Mid-range: These treadmills will work for walkers or runners. For walkers, a mid-range treadmill should have longer support arms, allowing you to balance yourself easier. The belt bed will be a bit longer than the basic treadmill but those with longer running strides may still struggle.

You'll see better tech features in this price range, including a heart rate monitor worn on the chest or pre-set training programs.

Top-end: The highest quality of treadmills will contain long belt beds with good shock absorption, making them perfect for runners. To gain these features, such treadmills rarely will fold up for storage, meaning they require a lot of free space. They will deliver greater maximum speed levels and greater levels of incline, too.

These treadmills consist of the highest-quality materials. You'll receive Wi-Fi connectivity and extensive pre-set exercise programs with these models.


What are some key treadmill features?

Interactive exercise programs: Treadmills may have pre-programmed workouts that can help you with weight loss , cardiovascular performance, speed workouts, or hills training. These programs will allow you to set the length of exercise time, but they will automatically change the speed of the treadmill and the incline to match the parameters of the pre-programmed workout.

The ability to incline, decline, and adjust the speed: To help with training for running on hills or for additional calorie burn, the treadmill needs to offer an incline. Most treadmills can reach at least a 12% incline grade. Some treadmills even give you a simulation of running downhill with a decline grade of around 3%.

You should be able to adjust the incline, speed, and program in use through the touchscreen monitor. The screen also gives you information on the time elapsed, calories burned, distance traveled, your heart rate, and more.


Are there different size treadmill belts?

Yes, there are, and it differs for what runners need versus walkers. Runners need a treadmill belt bed of roughly 55-60 inches long, while walkers can use one closer to 45-50 inches long. Taller people will need an even longer belt bed. Remember that the length of the treadmill isn't the same as the length of the bed.

The treadmill length (and width, for that matter) must accommodate the base portion of the unit that doesn't move, as well as the bed's motor housing at the front of the unit.

A treadmill belt bed should be at least 22 inches wide for runners which provides plenty of space in case you have a misstep. Walkers can successfully use a narrower bed than runners, such as 18 or 20 inches.


Are treadmills safe?

Many treadmills contain a safety line that hooks into the unit and clips to your shirt. Should you stumble, the safety line disconnects from the treadmill, causing it to shut down immediately. This is a helpful safety feature and it prevents situations where the person using the treadmill falls and gets launched into a wall.

It's also recommended that you unplug your treadmill when not in use for added safety. This assures it won't accidentally turn on if a child or pet is around it.


Do treadmills have a weight limit?

Based on the size of the motor and the shock absorption capabilities, a treadmill may give you a maximum user weight recommendation. You should be able to find this listed in its online user's manual or listed on its specifications sheet.

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Disclosure: Written and researched by the Insider Reviews team. We highlight products and services you might find interesting. If you buy them, we may get a small share of the revenue from the sale from our partners. We may receive products free of charge from manufacturers to test. This does not drive our decision as to whether or not a product is featured or recommended. We operate independently from our advertising team. We welcome your feedback. Email us at reviews@insider.com.