ProForm 505 CST Treadmill: A Comprehensive Review for 2023

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The ProForm 505 CST treadmill is a popular, feature-packed machine designed to cater to fitness enthusiasts with varying fitness levels and goals. With its sturdy construction, user-friendly technology, and efficient performance, the 505 CST provides a satisfying workout experience for those seeking a mid-range treadmill.

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In this comprehensive review, we will explore the treadmill’s features, specifications, and benefits, as well as address any potential drawbacks and evaluate its overall value for 2023.

Design and Construction

Frame and build quality

The 505 CST treadmill features a robust and durable frame, constructed from high-quality materials. The machine’s maximum user weight capacity is 325 lbs, reflecting its sturdy construction. The treadmill’s SpaceSaver design with EasyLift Assist allows for easy folding and storage when not in use, making it an excellent option for home gyms with limited space.

Running surface and belt

The treadmill’s running surface measures 20 x 55 inches, providing ample space for comfortable walking, jogging, and running. The ProShox cushioning system minimizes joint impact, ensuring a safe and comfortable workout experience. The 1.9″ precision-balanced, non-flex rollers and multi-ply belt contribute to smooth and quiet operation.

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The 505 CST treadmill features a 2.5 CHP Mach Z commercial motor, capable of handling various workout types, including walking, jogging, and running. This motor is designed for both durability and performance, ensuring consistent workouts over time.

Technological Features

Console and display

The 505 CST treadmill comes with a 6-inch high-contrast, backlit display, providing easy access to workout metrics, such as time, distance, calories burned, and heart rate. The console also includes an integrated tablet holder for additional entertainment options during workouts.

iFit compatibility

The treadmill is iFit-enabled, offering a wide range of interactive workouts, personalized training programs, and global running routes. With iFit, you can participate in on-demand, trainer-led workouts, track your progress, and even compete with friends. Note that the iFit membership is sold separately.

Incline options

The 505 CST treadmill offers an incline range of 0% to 10%, allowing for diverse workouts that target different muscle groups. The incline feature enables a more challenging workout and helps simulate outdoor running conditions.

Workout programs

The treadmill comes preloaded with 18 workout programs, focusing on calorie burning, incline training, speed goals, and interval training. These programs cater to various fitness levels and goals, ensuring a well-rounded workout experience.

Additional Features

Heart rate monitoring:

The 505 CST treadmill monitors contact heart rate through the EKG grip pulse sensors on the handlebars. This offers quick readings, although it may not be as accurate as a Bluetooth-enabled chest strap (sold separately).

Audio options

The 505 CST treadmill comes with an integrated sound system, featuring dual 2-inch speakers and an auxiliary music port, compatible with most MP3 players and smartphones.
Cooling fan The treadmill features a built-in CoolAire fan, ensuring that you stay comfortable during intense workouts.

Potential Drawbacks


Some users may find the assembly process time-consuming and challenging, requiring two people for optimal assembly. However, ProForm does offer an in-home assembly service for an additional fee.

iFit subscription

cost Although the iFit platform offers numerous benefits, the subscription cost may be a deterrent for some users. However, the treadmill’s preloaded workout programs provide a variety of options for those who choose not to subscribe.

Speed range

The 505 CST treadmill has a speed range of 0 to 10 mph, which may be suitable for most users. However, advanced runners or those looking for high-intensity interval training may find the top speed limiting for their needs.

Warranty and Customer Support


The ProForm 505 CST treadmill comes with a competitive warranty package, including a 10-year warranty on the frame, a 1-year warranty on the motor, and a 1-year warranty on parts and labor. This warranty demonstrates ProForm’s confidence in the durability and quality of their product.

Customer support

ProForm is known for its responsive and helpful customer support. They offer assistance through phone, email, and live chat options. Additionally, their website features a comprehensive FAQ section and informative articles, providing valuable resources for troubleshooting and maintenance.


The ProForm 505 CST treadmill is an excellent choice for those seeking a reliable, feature-rich machine that caters to various fitness goals and levels. Its robust construction, powerful motor, and advanced technology, such as the iFit platform, make it an excellent investment for anyone looking to improve their cardiovascular health, lose weight, or train for an event.

While there are a few potential drawbacks, such as the assembly process and the iFit subscription cost, the 505 CST’s overall performance and benefits outweigh these concerns.

In summary, the ProForm 505 CST treadmill offers an impressive combination of design, technology, and performance, making it a standout choice for home fitness enthusiasts. Its extensive features, competitive warranty, and reliable customer support make it a valuable addition to any home gym.

As we move into 2023, the ProForm 505 CST treadmill remains an excellent option for those seeking a dependable and versatile fitness solution.

John Smith is a passionate and experienced gym instructor, dedicated to empowering individuals to become the best versions of themselves through fitness. With over 10 years of professional experience, John has become a trusted authority in the health and wellness industry. Having worked with clients of all ages and fitness levels, John has developed a unique approach that combines a deep understanding of human anatomy and physiology with personalized fitness programs tailored to each client's goals and abilities. John's friendly and motivating demeanor enables him to build strong relationships with clients, guiding them on their journey to optimal health and wellness.

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