Horizon T303 Treadmill Review

Horizon Fitness competes favorably with brands like NordicTrack and ProForm and creates a comprehensive line of treadmills that vary in features and price. These treadmills are designed to suit different users, from those who want a machine for intense running up to those who want a machine for light jogging and walking.

The Horizon T303 is one of the top models in Horizon’s entry-level treadmills. It is ideal for individuals who want to lose or maintain weight and adopt a healthy routine in their lives. If you’re looking for a model with high-quality parts and a compact design, here’s an in-depth review of the Horizon T303 treadmill.

Related: Horizon T202 Treadmill Review

About Horizon T303 Treadmill

Although Horizon’s new AT models are designed for a more serious runner, the Horizon T303 is designed for more casual use. This treadmill has everything walkers, joggers, and newbie runners need to build a new at-home fitness routine. This top-rated machine has all the hallmarks of Horizon’s most appreciated fitness equipment. It has a 2.5 CHP motor that is quiet, powerful, and steady and has a lifetime warranty. Like other models in the same price range, this motor is one of the best for interval training since it responds well to speed changes compared to its competitors.

It has a max speed of 12 MPH and a 12% max incline. Although the max speed is fairly standard, the incline level is below the industry standard. Whether you like walking, jogging, or running, including incline to your workout routine will enhance calorie burn. However, those recovering from injuries and joint issues and those looking for lower impact workouts may not be able to use the treadmill at a full incline.

Like other Horizon treadmills, the T303 comes with an easy-folding feature, making it a great choice for those with limited workout space when the machine is not in use. The best thing about this brand is that it offers 0% financing on its treadmills.

Related: Horizon T91 Treadmill Review

Specs at glance

Motor:2.5 CHP
Incline:0 to 12%
Running Area:20”x60”
Top Speed:12 MPH
Weight Capacity:350 pounds
Weight:187 pounds
Dimensions:77x34x55 inches
Built-in programs12
Warranty:Lifetime frame and motor, two years on parts, and one year labor

Related: Horizon 7.8 AT Treadmill Review 

What I Like:


The T303 is designed for small spaces and has lower price points, making it an attractive treadmill for most users. Although it may lack advanced cushioning and some updated tech found on more expensive treadmills, the T303 is a solid machine that feels stable on the floor. This is a great buy for small rooms, apartments, or those who want a model that can fold in a corner when not in use. Thanks to the overall design and quality, this treadmill will give you the best value for your money.

Like other treadmills, the T303 comes with floating handlebars that help you get on and off the machine and guarantee a solid handhold when needed. The 20”x60” is longer than the normal home treadmills and will suit tall users and those with longer strides. What’s more, the PerfectFLEX deck cushioning comes with the right mix of support and shock absorption.


The T303 comes with a 6.7” BrilliantView backlit LCD screen that gives your workout feedback like distance, heart rate, calories, speed, and time. Using the built-in speakers, you can use your iPod or MP3 player to listen to your favorite tunes. The console layout has buttons for program selections, making it easy to jump from one setting to the other without disrupting your workouts. It also has a built-in COOLfit fitness fan, pulse rate monitoring, and hand grips.


The T303 performs well and feels comfortable even at high speed/incline settings. The motor is super responsive, and there’s no pause or lag between incline and speed settings. This treadmill has the right mix of support and shock absorption and has a built-in fan to keep you cool while running, jogging, or walking.

Related: Horizon T51 Treadmill Review

Exercise programs:

This treadmill has 12 preset workout programs, including cardio, weight loss, and performance workouts. Although the treadmill may feel light, the included programs will keep users challenged and motivated at all times.


The T303 has a foldable design, and the deck locks against the console. The folding feature saves space when you’re not working out. When unfolding the machine, ensure that there are no items or toys under the deck.

Weight Capacity:

The Horizon T303 treadmill weighs 187 pounds and can hold up to 350 pounds.


Horizon has one of the most generous warranties, and the T303 is no exception. It has a lifetime warranty on motor and frame, two years on parts, and one year on labor.

Related: Horizon 7.0 AT Treadmill Review

Horizon T303 Treadmill Review

What I don’t like

  • Programming: 12 workout programs are OK for beginners, but I wouldn’t mind a few more for a diverse workout routine.

My Verdict:

If you’re in the market for a solid treadmill for your home gym, the T303 is a great option. Compared to the previous models, it has an impressive setup with several great features, including incline training, built-in workouts, a large running deck, and advanced cushioning.

Related: Horizon T101 Treadmill Review