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The Nautilus T618 and Sole F80 are very similar treadmills. Discover the subtle differences and which option is the best choice for you.
Some of the main differences between the Nautilus T618 and the Sole F80 are that the Nautilus T618 has more pre-programmed workouts, a stronger motor, slightly bigger rollers, and a somewhat more budget-friendly price.
On the other hand, the Sole F80 has a bigger LCD screen, a slightly higher weight limit, somewhat longer warranties, and a slightly wider running surface.
Something else to note is that customer reviews currently tend to be more positive about the Sole F80. Quality issues tend to be just a bit more common with the Nautilus T618.
If you have suboptimal vision, want the higher weight limit, want the wider running surface, and/or don’t mind investing a bit more to reduce the risk of having any quality issues, the Sole F80 can be the right choice.
If these things don’t apply to you, the Nautilus T618 is still a solid treadmill. Choosing this option can save some money.
Most important differences Nautilus T618 vs Sole F80
The Nautilus T618 and Sole F80 have a similar target audience but there are some subtle differences between these two treadmills.
Not all of these differences are equally important. In the first table below, you can find the ones that are most likely to play a role in your decision.
| Feature | Nautilus T618 | Sole F80 |
|---|---|---|
| Screen | Dual Blue Backlit LCD Screens (Smaller) | 9.0″ Backlit LCD |
| Workout Programs | 26 Pre-Programmed Workout Programs | 6 Standard Programs, 2 Custom Programs, 2 Heart Programs & Free 30-Day Studio Trial |
| Weight Limit | 350 Pounds (158 kg) | 375 Pounds (170 kg) |
| Motor Power | 3.5 CHP | 3.5 HP |
| Rollers | 2.75″ Crowned Rollers | 2.5” Rollers |
| Warranties* | 15 Years Frame And Motor Warranty, 5 Years Parts Warranty, 2 Years Labor Warranty | Lifetime Frame, Motor, And Deck Warranty, 5 Years Electronics And Parts Warranty, 2 Years Labor Warranty |
| Running Surface | 20″ x 60″ | 22″ x 60″ |
| Price Category** | $$$ | $$$ |
| Check Current Price | Check Current Price |
*Warranties can vary from seller to seller
**Price category at the time of writing
Other features Nautilus T618 and Sole F80
Before going for either the Nautilus T618 or the Sole F80 you may also want to know about the smaller differences and their common features.
| Feature | Nautilus T618 | Sole F80 |
|---|---|---|
| Incline Options | 0% to 15% | 0 – 15 Levels |
| Speed Range | 0-12 mph (19.31 kmh) | 0-12 mph (19.31 kmh) |
| Shock Absorption | Yes | Yes |
| Weight | 288 Pounds (130.6 kg) | 278 Pounds (126 kg) |
| Dimensions | 78” L x 37.6” W x 62.8” H | 82” L x 37” W x 66” H |
| Foldable | Yes | Yes |
| Heart Rate Monitor | EKG Grip Sensors And Wireless Heart Rate Chest Strap Included | Pulse Grip & Included Bluetooth Chest Strap |
| Device Holder | Yes | Yes |
| Bluetooth App Functionality | Yes | Yes |
| Bluetooth Audio Capabilities | Has Speakers But Only Audio Jack Input From Your Devices | Yes |
| Color Screen | No | No |
| Workout Fans | Yes | Yes |
| Check Current Price | Check Current Price |
Differences Nautilus T618 vs Sole F80 explained in-depth
Individuals who are more experienced with treadmill features may be able to choose between the Nautilus T618 and Sole F80 by taking a look at the overview of differences and the prices.
Even so, many people will still be unsure about what certain features mean, why they are important, and to what extent the differences matter for their personal situations.
You can find some of the most important and confusing differences explained more in-depth below.
Screen
The screens of the Nautilus T618 and Sole F80 are both relatively basic but their difference in size can be relevant. Especially for people with suboptimal vision.
First of all, the Sole F80 has a 9.0″ backlit LCD. The exact screen measurements of the Nautilus T618 are not mentioned but they are clearly smaller than the ones from the Sole F80.
Both screens are definitely not the most advanced but do show time, distance, speed, and potentially heart rate if you are using a Bluetooth heart rate monitor.
These measurements will be just a bit easier to read on the console of the Sole F80 compared to the Nautilus T618.
How important the difference in screen size is depends on how much you pay attention to the displayed measurements and the state of your vision.
Weight limit
Weight limit sounds and is a relatively straightforward treadmill feature but it matters in more ways than one.
First of all, the Nautilus T618 has a weight limit of 350 pounds (158 kg). The Sole F80 is slightly sturdier with a weight limit of 375 pounds (170 kg).
The most important reason why you want to stay under these numbers is that the treadmills can simply break down if you go over them.
However, even if the machines don’t instantly break down, you speed up wear and tear and void your warranties.
Lastly, even if you are nowhere near these weight limits, they are still somewhat of an indication of how strong the materials and construction of each treadmill are.
As you can see, the Sole F80 will likely be just a bit sturdier than the Nautilus T618. Especially for individuals who plan to put their treadmills under a lot of pressure, this could be relevant.
Winner: Sole F80
Motor power
In a simplified version, you can describe a treadmill as a rotating belt that allows you to walk or run in place. The part making this belt move at the right speed is the treadmill motor.
As you can expect, treadmill motors can vary in a few areas. One of the most important ones is the power they can generate.
This motor power influences how fast you can run, what weight of users the treadmill can hold, and how long the motor will last in one workout and over time.
The Nautilus T618 has a motor power of 3.5 CHP. The Sole F80 has a motor power of 3.5 HP. This may look the same but the “C” standing for continues is an important difference.
Continuous horsepower is stronger than the regular maximum horsepower of the Sole F80 if you plan to use your treadmill longer than for one short sprint.
That being said, while this is a relevant difference, a general recommendation for heavy runners is to go for a treadmill motor power of 3 CHP or higher.
Both the Nautilus T618 and Sole F80 should be strong enough for workouts and individuals like this.
At the same time, the Nautilus T618 is definitely still more powerful. This could be important for heavier individuals who plan to use their treadmills very intensely and very often.
Winner: Nautilus T618
Rollers
Another important area of treadmills is the rollers they use. These are the cylinders the belt is stretched around.
The Nautilus T618 has 2.75″ rollers whereas the Sole F80 has 2.5″ rollers. This is again a small difference but enough to worth noting when the other differences are small too.
Generally speaking, bigger treadmill rollers tend to be better (up to a certain point of course). The first reason for this is that bigger rollers tend to cause less wear and tear on the treadmill belt and motor.
Additionally, bigger rollers tend to reduce the risk of the belt slipping over the rollers. Avoiding this will improve the quality of your workouts.
Something important to note about rollers is that the treadmill motor needs to be strong enough to deal with the bigger size.
Since the Nautilus T618 has both slightly bigger rollers and a slightly more powerful motor, you can expect the benefits above to a small extent.
Winner: Nautilus T618
Price
The differences in features between the Nautilus T618 and Sole F80 are relatively small. Something that could make your decision easier if they were in a totally different price category.
Exactly how much each treadmill costs depends on where you get them and can change over time. That being said, at the time of writing, the Nautilus T618 is currently a bit more budget-friendly than the Sole F80.
Whether the Sole F80 is worth this extra investment depends on how much you value its advantages and don’t mind its disadvantages.
Winner: Nautilus T618
Running surface
The running surface is basically how much free space you have to walk or run on each treadmill. In this comparison, the running surface is slightly different.
More precisely, the Nautilus T618 has a running surface of 20″ x 60″ (50.8 cm x 152.4 cm). The Sole F80 is just a bit wider at 22″ x 60″ (55.88 cm x 152.4 cm).
Most people will prefer a wider running surface since this reduces the risk of bumping against the sides and feels (and is) more spacious.
That being said, a narrower running surface also generally means the handles on the sides are closer to the middle. People with limited mobility who want to do supported walking may prefer this and in turn, the Nautilus T618.
Winner: Sole F80 (but some people prefer handles closer to the middle)
User reviews
Often the feature and price differences give you a good idea about what treadmill is the best choice. However, sometimes customer reviews can uncover unexpected downsides or trends in quality issues.
The challenge when trying to compare the Nautilus T618 and Sole F80 in this area is that the Nautilus T618 does currently not have the most customer reviews. Over time, the general trends could vary.
Both treadmills have some issues here and there. These include things like fast wear and tear and a challenging assembly. Customer support can use some improvement in these situations.
That being said, these exceptional issues are just a bit more common with the Nautilus T618. Customers are currently happier with the Sole F80.
Is the Nautilus T618 or the Sole F80 right for you?
In short, the Nautilus T618 has more pre-programmed workouts, a stronger motor, slightly bigger rollers, and a somewhat more budget-friendly price.
On the other side, the Sole F80 has a bigger LCD screen, a slightly higher weight limit, somewhat longer warranties, and a slightly wider running surface.
Something to note too is that customer reviews tend to be more positive about the Sole F80.
Even with that in mind, most people will find the Nautilus T618 a solid choice that can save them some money.
Some exceptions to this are people with suboptimal vision who need the bigger screen, people who want the higher weight limit and wider running surface, and/or individuals who don’t mind investing a bit more to avoid any quality issues.
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