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|ProForm Boston Marathon 4.0||NordicTrack T 6.5 Si|
|Motor Size||4.25CHP||2.6 CHP|
|Running Area||20” x 62”||20” W x 55” L|
|Weight Capacity||400 lbs||300 lbs|
|Footprint In Use (W,L,H)||37" x 64" x 74"||36” x 67.5” x 73”|
|Footprint Folded (W,L,H)||N/A||0|
|Incline Range||-6% to 20%||0% to 10%|
|Max Speed||15 MPH||10 MPH|
|Treadmill Best For||Joggers, Runners||Walking, Light Jogging|
|Display||10” touchscreen||10” touchscreen|
|PreInstalled Workout Apps||Marathon training programs||20|
|Heart Rate Monitoring||Wireless chest strap||EKG Grip Pulse|
|Water bottle cubbies||No||Yes|
|Warranties||Lifetime for frame, deck, and motor, 6 years on parts and electronics, 3 years on labor||Lifetime frame and motor, 1-year parts and labor|
|Belt||2-ply commercial belt||Commercial Tread Belt|
|Roller Size||2.5” front and back||1.9” Non-Flex rollers|
|Cushioning||Runners Flex™ Impact Control||FlexSelect 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||Email, live chat, phone|
|Return Policy||Depending on where you purchase this discontinues treadmill, you will be subject to their return policy||30-day trial|
Which is better? Comparison of ProForm Boston Marathon 4.0 VS NordicTrack T 6.5 Si 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.