I be impressed by the accuracy and sensitivity of this equipment . I go for a jog with this recently when I just receive it . the distance tracking be great with very good accuracy . it can be configure to stop the timer once you stop or jog on the spot due to various reason like traffic light \/ road junction wait time . just this distance , pace , and timing feature of this watch be already worthwhile for any runner to invest in . in the past , I have always enjoy run on the trackmill machine in the gym just because its able to give I the distance that I have run . but now , you can do it outdoor and enjoy the scenery while monitor you distance , pace , calorie burn , etc. . great !