In reply to mav:
> It's his heart rate that gets me, especially when combined with his speed. He's usually doing around 15-16mph, depending on terrain, and yet his heart rate spends about 80-90% of the day sitting under 112. The mileage/speed/effort combination is staggering.
That's not atypical for the speed amongst long distance cyclists. Steve Abraham's is even lower for a similar average.