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|ProForm Boston Marathon 4.0||Horizon Adventure 3|
|Motor Size||4.25CHP||2.5 CHP|
|Running Area||20” x 62”||20” x 55”|
|Weight Capacity||400 lbs||300 lbs|
|Footprint In Use (W,L,H)||37" x 64" x 74"||34" x 71" x 54"|
|Footprint Folded (W,L,H)||N/A||34" x 45" x 61"|
|Incline Range||-6% to 20%||0% - 12%|
|Max Speed||15 MPH||12 MPH|
|Treadmill Best For||Joggers, Runners||Walkers|
|Display||10” touchscreen||5.75” yellow-green LCD|
|PreInstalled Workout Apps||Marathon training programs||30|
|Heart Rate Monitoring||Wireless chest strap||Handlebar grip|
|Water bottle cubbies||No||2|
|Device holder||No||Same as cubbies|
|Warranties||Lifetime for frame, deck, and motor, 6 years on parts and electronics, 3 years on labor||Lifetime for frame and motor, 3 years cushioning and parts, 1 year for labor|
|Belt||2-ply commercial belt||2-ply|
|Roller Size||2.5” front and back||Front 2.25” and rear 1.75”|
|Cushioning||Runners Flex™ Impact Control||3-zone Variable Response Cushioning|
|Customer Support||As this treadmill is discontinued, the customer service is not through ProForm. Support will depend on the third-party company you purchase from||The customer support number hours are M-Th 7:00 a.m. - 7:00 p.m. CST, F 7:00 a.m. - 5:00 p.m. CST, with no hours on the weekends. The email support hours are unlisted, but you can contact Horizon through email|
|Return Policy||Depending on where you purchase this discontinues treadmill, you will be subject to their return policy||30-day satisfaction guarantee, will charge for shipping return and original assembly fee|
Which is better? Comparison of ProForm Boston Marathon 4.0 VS Horizon Adventure 3 treadmills. Compare the characteristics of each product and make your choice. Below you can see the most important specifications that you should check before purchase.