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Nautilus T516 Review


Nautilus T516 Treadmill

The Nautilus T516 is engineered with a gym-inspired design that lets you enjoy running or walking on a remarkably comfortable surface that’s easy on your feet, ankles, knees and hips.

Priced slightly higher than its little cousin, the Nautilus T514, the treadmill is equipped with all the essentials (3.2 CHP motor, large deck, great speed and incline flexibility) as well as several extras like 26 pre-defined workout programs and dual-screen console.

The Nautilus T516 also has a built-in cooling fan, and pulse grips as well as wireless chest strap for heart rate monitoring.

Learn more by reading our full Nautilus T516 treadmill review below…


Wondering if the Nautilus T516 is your best bet? Compare it to similar treadmills at the pages below:

Here are some other great treadmills you might be interested in:

Video Overview of the Nautilus T516:


Model Nautilus T516

Our custom rating considers all of the treadmill's features, specs, warranties, and 100's of user & expert reviews, to save you time!

List Price

Suggested retail price, typically higher than the price you'll pay with our recommended retailers.

Best Price

Since prices change daily, this link goes to our preferred retailer for the current best price. Note: MSRP stands for Manufacturer's Suggested Retail Price.


Treadmill Speed is measured in Miles Per Hour (mph). Average running speed is 5-9 mph.

0.5 - 15 mph

Treadmill Incline measures the angle of the deck, and how steep it is relative to the floor (0% is flat, and 15% is like a steep hill).

0 - 15%

The Treadmill Motor is what turns the belt as you run. We recommend at least 2 HP (Horsepower) motors, 2.5+ HP for jogging, and 3.0+ HP for running.

3.2 CHP

Treadmill Deck dimensions are measured in inches: Width x Length. The wider and longer the deck, the safer it is (55-60 inches long recommended for running).

20" x 58"

The Treadmill Belt is the surface you run on. The thicker the belt, the less impact on your joints. At least 2-ply (1 inch) recommended.

SoftTrack (1.6mm)

Some treadmills are designed to conserve space by folding up. This is a convenient option, but some features might be reduced.


Treadmill Programs allow you to complete a workout with changing speeds and inclines, without changing anything manually.

Pre-Defined: 26
User-Defined: 4
Max. Weight

Treadmill Max User Weight is the amount of weight, in pounds (lbs), that it can safely support, which can represent durability.

350 lbs
Heart Rate

Heart Rate programs allow you to track how many times your heart is beating per minute (bpm), and some control the workout for you.

Pulse Grips & Telemetry Chest Strap

Dimensions are included to help you figure out if this treadmill will fit properly (Length x Width x Height and Height x Depth).

78" x 34" x 54"
Folded: 65.5" x 41"
Weight: 345 lbs
Rollers: 2.75"

Treadmill Display refers to the screen you'll look at to monitor workouts. LED and LCD displays are similar to TV screens.

2 Blue Backlit LCD Windows
Cooling Fans

Treadmill Cooling Fans are designed to help keep you cool during an intense workout.

Accessory Tray

Some treadmills include an accessory tray for holding items such as water bottles, wallets, keys, or MP3 players like iPods.


Treadmills that include a sound system allow you to listen to your MP3 player/iPod through built-in speakers (no headphones).

Quick Controls

Quick Controls allow you to select speed, incline and even workout programs with the touch of a button (usually on the handles).


The warranty is a very important part of your investment. The longer the warranty, the longer you can get free/discounted repairs by the manufacturer.

Frame: 15 Years
Motor: 15 Years
Parts: 2 Years
Electronics: 2 Years
Wear Parts: 90 Days

Rating: 78.2%

Full Review

Quick Summary
Rating: 78.2/100. Comfortable treadmill designed to produce less wear and tear on knees, joints, hips and back with SoftTrack cushioning. Not the most compact unit and very difficult to transport weighing 345 lbs.

– Powerful 3.2 CHP motor
– Large running surface (20″ x 58″)
– SoftTrack suspension reduces stress on joints
– SoftDrop easy folding technology
– Large range of pre-defined workout programs
– Remote one touch controls w/ diverse speed/incline

– No mp3 deck or built-in speakers
– Not extremely compact (unit weighs 345 lbs)
– A couple of reported malfunctions on the console


The Nautilus T516 is essentially an expanded version of its cousin, the T514.

Add a few hundred dollars and you get a bigger motor (2.75 to 3.2 HP), more workout programs, larger running surface (20″ x 55″ to 20″ x 58″) and slightly better warranty (10 yrs to 15 yrs on frame and motor).

As far as durability, the large frame, deck size and motor will make the walking, jogging or running experience very comfortable.

With a focus for performance or new technology, the T516 may not sport all of the latest toys, but its quiet and smooth performance is very solid.

Workout Programs

Unlike some treadmills on the market, the Nautilus T516 treadmill did not overlook the important of implementing pre-defined workout programs.

The T516 features 26 different workout programs to keep the workout experience challenging.

Among the 26 programs, users have four custom user profiles, nine time/distance courses (including pre-set 5k and 10k) as well as BMI and calorie goal settings.

Four polar heart rate programs with telemetry, grip and chest belt are included.

Treadmill Features

Similar to the Nautilus T514, the T516 proudly boasts about the “unique fan design which integrates convenience and comfort”.

The comfort is designed to extend throughout the body as the treadmill ignores fancy electronic features, instead opting for the SoftTrak cushioning suspense designed to ease your feet, ankles, knees and hips.

Additionally, the T516 will trek up to 15 mph as well as adjust to a 15 percent maximum incline, all on a very large 20″ x 58″ walking/running surface.

While the Nautilus T516 is certainly not compact, the treadmill does fold with easy-to-use SoftDrop folding technology.

No iPod dock or built-in speakers, but if listening to music through earphones or on a stereo is what you’re accustomed it’s not even a big deal to note.

Warranty & Guaranty

Nautilus T516 offers an enhanced warranty when compared to the T514:

– Frame: 15 years
– Motor: 15 years
– Parts & Electronics: 2 years
– Wear parts: 90 days

Contact 1-800-628-8458 for additional details.


The T516 has merely expanded on what the Nautilus T514 was already doing well. Nautilus is a very reputable treadmill producer and their care for details is evident on the Nautilus T516.

Still not sure? Compare the Nautilus T516 to other treadmills $1,500 to $2,000.

Other Nautilus Treadmills