Okay, being an engineer and a semi math/physics major I'll bite. I have to ask though, in your formula you use (A*2) but in your example you used 0.02 instead of 2. I'm assuming you meant to use 2/100 in your formula??

Assuming 0.02 is correct and using the ride I did Sunday:

M=101.5 miles

A=53.75 years

W=170 lbs (after eating 2 lbs of stuff after the ride)

=101.5*(53.75*0.02)*(170/200)= 92.75

I would offer that there should be a speed adjustment as well and that either speed or duration of the ride could be used. Let's assume that 15 mph is "average" and use speed for my example.

92.75*(21/15)= 129.84

So now all we need is everyone else's data and we can do a nice graph of some sort so I can visually see the results. Of course mine number would need to be the biggest bar, piece of pie, etc for it to be statistically relevant ......