Ive been riding around 24 miles 4 -5 times per week round trip here. I have my computer strapped to my bars and typically average about 16.5 mph on my SS. Ive hit as high as 28mph. My cadence is anywhere from 70 - 85 average i would say..but have hit as high as 115.

Ive been doing this most of the summer and just recently i strapped on my HRM for tonights ride. It typically has been pretty accurate for my running / training time doing other workouts. It is a cycling HRM.

That said......i hit my 24.x miles in around 1:42 hours ( i stopped half way to take a break for about 15 minutes).

The HRM said i was running around 151. When i get into the city i really have to slow it down heace the lower bpm. Every time i glanced at it i was in the 168 - 175 range ....and i hit 186 as a max on this ride.

THe calories burned stated that i burned 1105 calories on the ride. That seems pretty high but then again i was pushing pretty hard in spots.

I guess my question is.......is that even possible? 1000 calories in less than 2 hours? Mind you i was huffing and puffing pretty hard but still...