Nautilus U616 Upright Exercise Bike Reviews

Nautilus U616 Upright Exercise Bike

Nautilus U616 Upright Bike is an improved home bike and offers more benefits than the entry-level U614 upright exercise bike. It comes with higher training programs that provide users with up to 29 training options.

The exercise bike has more resistance, up to 25 levels, and has high technological characteristics. It has a Bluetooth connection, communication pulse sensor, telemetry-enabled heart rate monitoring and can be synced with the Ridesocial app that enables mixed reality training.

This bike also syncs with the Nautilus Trainer 2 app to monitor training performance. It has a dual 2-track blue backlit LCD display to allow users to do more activities while exercising. For added comfort and ease of use, the U616 upright bike features a contoured padded seat.

This makes training easier. It provides flexibility and adjustment to its components such as flexible seats, adjustable angle handlebars, and a 3-speed adjustable cooling fan. For greater machine stability, it features a coated steel frame with a 10-year high-speed warranty.

High inertia belt transmission system. The heavier flywheel offers easier starts and more consistent rides. Although the upright bike has high-quality features, it is very cheaply priced and available for under $ 500.

Nautilus U616 Upright Exercise Bike

How Is the Nautilus U616 Upright Exercise Bike Different from Other Nautilus Bikes?

The U614 is a basic Nautilus model. Released as new for this year, it deviates from the 500 series model launched more than five years ago. The old range was highly regarded and received great praise from customers for its quality and reliability. There is no reason to expect this new model to be even less so.

This is a classic upright bike, designed for gentle cardio. If you want something that really fits you, consider a spinning bike like the Schwinn IC Performance Plus.

The console has been updated to be easier to read and has some more integrated programs. It now has 22 training programs, compared to 6 for the 2010 model, 22 resistance levels compared to the previous 8, and also supports two user profiles.

It seems Nautilus has really thought about what the modern user needs and we like its new console which includes a split-screen (for storing the tablet) and a quality speaker too. I find this to be a real motivator knowing that friends can see what I have done and the progress I have made.

If you like intense cardio routines, you are sure to enjoy using this machine. It’s a good entry-level fitness product for anyone looking to spice up their routine on a regular basis and a nice upgrade from the old model. Plus, it’s great if you want to take your weight loss plans to the next level.

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Ergonomic Design Features

If you’re looking for a low-impact cardio workout but don’t have space or budget for an elliptical trainer, an indoor stationary bike might be your best solution.

This is one of the reasons why the Nautilus U616 is gaining popularity, with heavy-duty frame design, tilt-adjustable handlebars, and fully adjustable seats.

Horizontal seat adjustment is not available on the old U614 and helps create the optimal driving position for your height. This is also aided by the ability to change the angle of the handles, which promotes good posture and relieves pressure on the lower back.Nautilus U616 Upright Bike

With the seat and handles adjusted, you are ready to start training, which can be set to any of 25 different intensity settings, making the bike suitable for all levels of personal fitness.

This is controlled by a high inertia transmission system and a weighted perimeter flywheel, with an electromagnet applying resistance through a system called ECB (Eddy Current Braking). Because the U616 uses ECB resistance, your bike workouts are quieter and smoother than those that rely on a large fan, like Schwinn’s Airdyne collection.

Another set of features to upgrade from the U614 is the seat and handles, both of which are classified by Nautilus as “oversize”. This provides an extra level of comfort for longer workouts and is combined with a set of straps on the pedals to keep your feet safe at all resistance levels.

The seat itself remains ergonomically shaped and molded to provide high levels of support and comfort and helps emulate the feeling of riding an outdoor road bike.

And what about the console functions? What can you track during training? Does the U616 offer any kind of performance monitoring?

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Features of the Nautilus U616 Upright Exercise Bike


The contoured, cushioned seat provided on the U616 steep bike allows users to continue practicing comfortably for longer periods of time. It also allows users to adjust the seat horizontally or vertically to achieve a comfortable position.


Two-track blue backlit LCD screen built into the console allows users to do more activities while exercising. It also has other features like Bluetooth connectivity, quick controls, a USB charging port, built-in speakers, and preset workout programs.

Magnetic Brake:

The upright bike offers increased resistance up to 25 levels with an eddy current brake system and offers smoother and quieter workout routes. The resistance levels can be configured according to the needs and abilities of the user.

Drive Type:

This upright bike features a belt drive system with a weighted flywheel around the perimeter that allows the operator to be quiet, smooth, and vibration-free. As a result, the high speed and inertia transmission system offers a more consistent training experience to its users.

Heart Rate Monitor:

To enable heart rate monitoring, the upright bike has both contact pulse grips, and telemetry is enabled. This feature helps users monitor and control heart rate during training and set exercise levels accordingly.


The Nautilus U616 upright bike has a coated steel frame and is sturdy, powerful enough to support a user’s weight of up to 300 lbs.


The oversized pedals equipped with straps to help users maintain foot position during training without slipping. When using the pedals, users can wear sports shoes to find the best comfort. To make the pedals strong and durable against any level of resistance by attaching the pedals to a 3-piece crank arm.

Device Charger:

The Nautilus U616 upright bike has a USB charging port on its console that allows users to charge their personal devices while exercising.

Additional Features:

Nautilus U616 upright bike has 2 two-way blue backlit LCD screens for displays, speakers, bottle cage, cooling fan, etc. to make the training experience more convenient, comfortable, and enjoyable.

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Nautilus U616 Upright Exercise Bike is Easy to Assemble

The Nautilus U616 user manual contains clear assembly instructions. When buying new fitness equipment, after waiting for delivery, the last thing you want to do is spend hours putting it together.

Luckily, the Nautilus U616 upright bike comes mostly pre-assembled. The crank arm and resistance system included as a single unit.

Once the base stabilizers are in place, it’s simply a matter of building the posts for the seat and console. Then it connects the pedals.

The user manual does a great job explaining each step clearly. Moreover, using a combination of exploded diagrams and part references, with all the tools which needs to include.

With the AC adapter plugged in, you’re a bit limited in positioning the bike as it needs to be close to a power outlet. But if you need to move it from room to room, the front-mounted transport wheels and a relatively low product weight (68lbs) make it easier to handle.



  • 29 pre-set workout programs
  • 25 levels of Resistance
  • 4-way adjustable handlebars
  • Pedals with strap
  • Contact and Telemetry Enabled Heart Rate Monitoring
  • Sync with RideSocial App
  • Media Shelf
  • MP3 input port and USB charging port
  • Low maintenance
  • Accessories Tray
  • Easy Assembly



  • The frame does not have a Lifetime Warranty
  • The display is not very great


Final Verdict

The Nautilus U618 upright bike is a fitness machine very close to commercial standards. It offers an impressive combination of 25-level AD current resistance, higher micro-adjustments,; 29 training programs, a Bluetooth-enabled console with many other features, and comfort factors. Although it is an upright bike, it can withstand high-intensity workouts. This makes it perfect for a wide range of cardiovascular workouts, interval workouts. It also strength and endurance development, recovery training, and of course weight loss. Finally, it costs less than a commercial upright bike, offering excellent value for money.

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