We have owned this treadmill for 10-12 years.
I did winter marathon training on it for three of those years, plus workouts at least five months a year.
My husband is a daily runner of 5 miles per day and has used this continuously.
What a workhorse and love the shock absorbsion.
Plan to buy another.
After all this time, (including one replacement of the running board, the belt, and engine)it is overheating and we will purchase a new one.