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5 Best Curved Treadmill 2025 in the United States

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Our Top Picks

#1

Winner

Assault Fitness Runner Pro - Better Than a Motorized Treadmill - Great for HIIT, Cardio, and Endurance Training - Motorless

Rating
9.8
Chosen by1,307
Adjustability
Build Quality and Durability
Footprint and Portability

Most important from
99 reviews

Adjustability
The treadmill reacts naturally to your movements, making it easy to adjust to and use effectively.
Build Quality and Durability
A major piece of equipment that feels like the real deal, with assembly being surprisingly straightforward.
Footprint and Portability
Even children can use it instantly, highlighting its intuitive design and ease of use.

The Assault Fitness Runner Pro is a standout choice for those seeking an effective curved treadmill, especially for high-intensity interval training (HIIT) and endurance workouts. One of its key strengths lies in its motorless design, which means the treadmill is athlete-powered; this can lead to a greater calorie burn and a more intense workout experience compared to traditional motorized treadmills. It's also designed for ease of use and maintenance, requiring minimal setup and no electricity, making it versatile for indoor and outdoor use.

The display features give users access to important metrics such as speed, heart rate, time, and distance, and it can connect via Bluetooth and ANT+ to popular fitness apps, enhancing tracking capabilities and interactive training. Another positive point is the sturdy build quality, made from alloy steel, which supports a significant weight capacity of up to 350 pounds. Its portability is a plus, with built-in wheels for easy movement, though it does weigh 280 pounds, which could make it less convenient for some users to transport.

However, there are some drawbacks to consider. The treadmill requires assembly, which may not be a hassle-free experience for everyone. Additionally, its footprint is quite large at 70 x 33 inches, which might not suit smaller living spaces. The LCD display, while functional, is relatively small at 7 inches, which might not be as user-friendly for viewing workout data from a distance.

The Assault Fitness Runner Pro is ideal for fitness enthusiasts looking for a challenging workout and the freedom to train without electric constraints. However, potential buyers should weigh the assembly and space requirements against their specific needs and living conditions.

Rating
9.8
Chosen by1,307
Adjustability
Build Quality and Durability
Footprint and Portability

Most important from
99 reviews

Adjustability
The treadmill reacts naturally to your movements, making it easy to adjust to and use effectively.
Build Quality and Durability
A major piece of equipment that feels like the real deal, with assembly being surprisingly straightforward.
Footprint and Portability
Even children can use it instantly, highlighting its intuitive design and ease of use.
#2

DELAVIN Curved Manual Treadmill, Non Electric Treadmill with 4 Resistance Levels, Motorless Treadmill with Front Digital Display and Handlebar, Wide Belt Treadmill 440LBS Capacity for Home Gym(FBA)

Rating
9.6
Running Surface
Weight Capacity
Display and Tracking Features

Most important from
3 reviews

Running Surface
The track is wide and the treadmill is well built, providing a comfortable running experience.
Weight Capacity
The treadmill feels very stable and solid, even for users weighing around 200 pounds.
Display and Tracking Features
While the monitor might not be accurate for tracking distance, the treadmill offers excellent build quality at a more affordable price point.
Build Quality and Durability
While the monitor might not be accurate for tracking distance, the treadmill offers excellent build quality at a more affordable price point.

The DELAVIN Curved Manual Treadmill offers a unique workout experience with its motorless design and curved running belt, making it an energy-efficient choice. It comes with four adjustable resistance levels, allowing you to switch up your workout intensity easily. The wide running surface (62.9 x 18.9 inches) is designed to improve running comfort and reduce joint impact, which is great for varied workouts including walking, jogging, sprinting, and HIIT training.

The treadmill supports a substantial weight capacity of 440 lbs, indicating its sturdy build, and the alloy steel frame ensures long-term durability. Plus, there’s no need for assembly, which is a nice convenience. The LED display tracks essential workout metrics like time, speed, distance, and calories burned, helping you stay on top of your fitness goals.

Being manual means it requires more effort to get started, and the treadmill is quite large and heavy (78.74 x 35.43 x 60.24 inches, weighing 346.5 pounds), which could be a challenge if space and portability are concerns in your home gym setup. The treadmill's silent design is a plus for home environments, ensuring you won’t disturb others while working out. This treadmill is well-suited for dedicated athletes and fitness enthusiasts looking for an eco-friendly and effective workout solution.

Rating
9.6
Running Surface
Weight Capacity
Display and Tracking Features

Most important from
3 reviews

Running Surface
The track is wide and the treadmill is well built, providing a comfortable running experience.
Weight Capacity
The treadmill feels very stable and solid, even for users weighing around 200 pounds.
Display and Tracking Features
While the monitor might not be accurate for tracking distance, the treadmill offers excellent build quality at a more affordable price point.
Build Quality and Durability
While the monitor might not be accurate for tracking distance, the treadmill offers excellent build quality at a more affordable price point.
#3

Sunny Health & Fitness Smart Ultra Manual Treadmill, Curved, Non-Motorized, High-Intensity with 8 Levels of Magnetic Resistance - SF-X7110

Rating
9.4
Running Surface
Build Quality and Durability
Footprint and Portability

Most important from
205 reviews

Running Surface
The narrow running surface might not be ideal for runners, but it fits well for walking or brisk walking workouts.
Build Quality and Durability
The treadmill is impressively sturdy, with no wobble or shake, ensuring a stable workout experience.
Footprint and Portability
While the treadmill is heavy and a bit challenging to move alone, its design and performance are well worth the effort.

The Sunny Health & Fitness Smart Ultra Manual Treadmill features a curved design that promotes natural running mechanics, helping users burn more calories. It offers a spacious running surface (59 x 17.7 inches) that is anti-slip, ensuring safety during workouts. With no motor, users can control their speed entirely, making it suitable for walking, jogging, or sprinting without restrictions. One of its standout features is the free SunnyFit APP, which provides access to numerous workouts and virtual tours at no extra cost.

The treadmill has 8 levels of magnetic resistance, allowing users to adjust their workout intensity easily. Its construction is geared towards reducing joint impact, providing a comfortable workout experience. The durable belt and high-quality components ensure smooth operation with minimal lateral movement. The digital performance monitor offers essential metrics like time, calories, speed, distance, pace, and pulse, although the pulse monitor requires an additional purchase.

It supports a weight capacity of up to 330 lbs, accommodating various users. The treadmill is designed for home use, equipped with transportation wheels and handles for easy mobility. However, at 157 lbs, it might be a bit heavy for some users to move around frequently. The footprint is relatively large (67.7 x 29.9 inches), which could be a consideration for those with limited space. It also requires assembly. Despite these minor drawbacks, its sturdy build, adjustability, and comprehensive tracking features make it a valuable option for those looking to enhance their running workouts at home.

Rating
9.4
Running Surface
Build Quality and Durability
Footprint and Portability

Most important from
205 reviews

Running Surface
The narrow running surface might not be ideal for runners, but it fits well for walking or brisk walking workouts.
Build Quality and Durability
The treadmill is impressively sturdy, with no wobble or shake, ensuring a stable workout experience.
Footprint and Portability
While the treadmill is heavy and a bit challenging to move alone, its design and performance are well worth the effort.

Buying Guide for the Best Curved Treadmill

Choosing the right curved treadmill can significantly enhance your workout experience. Curved treadmills are designed to provide a more natural running experience, reduce the impact on your joints, and help you burn more calories. When selecting a curved treadmill, it's important to consider several key specifications to ensure it meets your fitness goals and preferences. Understanding these specs will help you make an informed decision and find the best fit for your needs.
Running SurfaceThe running surface is the area where you run or walk on the treadmill. It's important because it affects your comfort and safety during workouts. Curved treadmills typically have a non-motorized, slatted belt that moves with your stride. A larger running surface provides more space for your movements, which is especially beneficial for taller users or those with a longer stride. If you plan to use the treadmill for high-intensity workouts or sprints, a larger running surface is recommended. For general fitness or walking, a standard-sized surface should suffice.
Weight CapacityWeight capacity refers to the maximum user weight that the treadmill can safely support. This spec is crucial for ensuring the durability and stability of the treadmill during use. Curved treadmills generally have a higher weight capacity compared to traditional treadmills. If you are a heavier individual or plan to use the treadmill for intense workouts, choose a model with a higher weight capacity to ensure it can handle the stress and provide a stable running experience. For lighter users or moderate exercise, a lower weight capacity may be adequate.
AdjustabilityAdjustability refers to the ability to change the resistance or incline of the treadmill. This feature is important for customizing your workouts and targeting different muscle groups. Some curved treadmills offer adjustable resistance levels, allowing you to increase or decrease the difficulty of your workout. If you want to vary your training intensity or simulate different terrains, look for a treadmill with adjustable resistance. For users who prefer a consistent workout or are new to fitness, a treadmill with fixed resistance may be sufficient.
Display and Tracking FeaturesDisplay and tracking features include the treadmill's ability to monitor and display workout metrics such as speed, distance, time, calories burned, and heart rate. These features are important for tracking your progress and staying motivated. Some curved treadmills come with advanced displays and connectivity options, allowing you to sync with fitness apps or wearables. If you are goal-oriented and like to keep track of your performance, choose a treadmill with comprehensive tracking features. For those who prefer a simpler approach, basic tracking features may be enough.
Build Quality and DurabilityBuild quality and durability refer to the materials and construction of the treadmill. This spec is important for ensuring the treadmill can withstand regular use and last for years. Curved treadmills are typically built with high-quality materials to support intense workouts. Look for models with a sturdy frame, durable slats, and a robust belt system. If you plan to use the treadmill frequently or for high-intensity training, invest in a model with superior build quality. For occasional use or lighter workouts, a standard build may be sufficient.
Footprint and PortabilityFootprint and portability refer to the size of the treadmill and its ease of movement. This spec is important for fitting the treadmill into your available space and for storage purposes. Curved treadmills can vary in size, so measure your workout area to ensure the treadmill will fit comfortably. Some models come with wheels or foldable designs for easier portability and storage. If you have limited space or need to move the treadmill frequently, look for a compact and portable model. For dedicated workout spaces, a larger, more permanent setup may be ideal.

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