sorry about the video it's a new app the first time I used it I just thought it was cool because it had the mph.
I weigh about 250 5 lb and I'm 6 ft 2 in tall
I've used other apps and GPS average rate around 54 mph top speed. my son who weighs about 125 lbs hits almost 60! we clocked him at 58 mph and he was still climbing but had to let off. we are going to do a speed run with him Next video!