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|ProForm Boston Marathon 4.0||Nordictrack C1650|
|Motor Size||4.25CHP||3.5 CHP|
|Running Area||20” x 62”||20” x 60”|
|Weight Capacity||400 lbs||300 lbs|
|Footprint In Use (W,L,H)||37" x 64" x 74"||35.75" x 78.3" x 56.4"|
|Footprint Folded (W,L,H)||N/A||0|
|Incline Range||-6% to 20%||0% - 12%|
|Max Speed||15 MPH||12 MPH|
|Treadmill Best For||Joggers, Runners||Walkers, Joggers, Runners|
|Display||10” touchscreen||10” web-enabled touchscreen|
|PreInstalled Workout Apps||Marathon training programs||34|
|Heart Rate Monitoring||Wireless chest strap||EKG handlebar grips|
|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, 5-year parts, 2-year labor|
|Belt||2-ply commercial belt||2-ply|
|Roller Size||2.5” front and back||1.9” front and back|
|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||NordicTrack fitness consultants are available online and over the phone to answer the questions of both users and prospective buyers|
|Return Policy||Depending on where you purchase this discontinues treadmill, you will be subject to their return policy||30-day money-back guarantee for anyone not satisfied with their purchase with a 10% restocking fee. Fee waived if product defective/damaged|
Which is better? Comparison of ProForm Boston Marathon 4.0 VS Nordictrack C1650 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.