Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
Here's my personal experience:
I'm 44 years old. 220-44=176 max heart rate. Except that someone forgot to tell my heart. I've averaged 178 for an hour and hit 205 many times. I like Camilo's analogy: it's like buying shoes based on correlation to height.