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|ProForm SMART Performance 600i||ProForm Boston Marathon 4.0|
|Motor Size||2.75 CHP||4.25CHP|
|Running Area||20” x 60”||20” x 62”|
|Weight Capacity||325 lbs||400 lbs|
|Footprint In Use (W,L,H)||36.75" x 79.75" x 59.25"||37" x 64" x 74"|
|Footprint Folded (W,L,H)||N/A|
|Incline Range||0% to 12%||-6% to 20%|
|Max Speed||12 MPH||15 MPH|
|Treadmill Best For||Walkers, Joggers||Joggers, Runners|
|Display||Round LED/LCD||10” touchscreen|
|PreInstalled Workout Apps||22||Marathon training programs|
|Heart Rate Monitoring||EKG handlebar grips||Wireless chest strap|
|Water bottle cubbies||Yes||No|
|Warranties||Lifetime motor and frame, 2-year parts, 1-year labor||Lifetime for frame, deck, and motor, 6 years on parts and electronics, 3 years on labor|
|Belt||2-ply||2-ply commercial belt|
|Roller Size||1.9” rear||2.5” front and back|
|Cushioning||ProShox™ Cushioning||Runners Flex™ Impact Control|
|Customer Support||Phone, email, live chat||As this treadmill is discontinued, the customer service is not through ProForm. Support will depend on the third-party company you purchase from|
|Return Policy||30-day money-back guarantee||Depending on where you purchase this discontinues treadmill, you will be subject to their return policy|
Which is better? Comparison of ProForm SMART Performance 600i VS ProForm Boston Marathon 4.0 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.