10 Best Curved Treadmill 2025 in the United States

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.

The RUNOW Curved Treadmill is designed to provide a more intense workout compared to traditional treadmills, burning up to 30% more calories. This non-electric treadmill allows for self-paced running, making it ideal for various activities like sprinting, jogging, and HIIT training. Its manual resistance adjustment feature with four levels adds versatility to your workouts.

The treadmill is built with alloy steel and a rubber tread, ensuring durability and good shock absorption, which helps protect your joints during exercise. Its weight capacity is impressive, supporting up to 400 pounds. It includes a 5-inch LCD monitor that tracks essential data such as time, distance, calories, speed, and resistance level, assisting you in meeting your fitness goals. Additionally, it features a cup holder and two transport wheels for easier mobility.

However, the treadmill is quite heavy at 287 pounds and has a large footprint, which might be challenging to move and store in smaller spaces. Despite its weight, the sturdy build and commercial-grade quality suggest long-term reliability. The RUNOW Curved Treadmill is suitable for a wide range of users, from athletes to office workers and the elderly, thanks to its easy operation and no requirement for electricity. The product also comes with a solid warranty, offering 5 years for the frame and 3 years for parts, ensuring peace of mind for your investment.

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.