Based on the Weslo TREADMILL 831.297100 User's Manual one lap is equal to 1/4 mile, therefore 4 laps is equivalent to 1 mile.
Weslo is a registered trademark under ICON Health & Fitness. Since 1977, ICON has been an innovation leader in the fitness industry. Their brands have grown around the world to become immediately recognizable to customers with a reputation for performance and quality.
Aside from Weslo they also own other best-known brands in fitness such as NordicTrack, FreeMotion Fitness, ProForm, Weider, HealthRider, Image, iFit. They also license the Jillian Michaels, Gold's Gym, and Google brands.
For further enquiries you can contact Weslo customer services hotline at 1-866-699-3756, have your model number and serial number with you when you call.
In health and fitness news, during a media event recently, Apple announced a key feature on Apple’s new iPhone 5S, the M7 “motion coprocessor,” which the company says will “enable a new generation of health and fitness apps." Find out more at Medical Daily.