Originally Posted by
spdntrxi
I can ride at 220-age all day long
One one 3-day ride, in my 50's:
day 1 - 5:30 duration, avg HR 161, max 193
day 2 - 7:12 duration, avg HR 153, max 180
day 3 - 7:27 duration, avg HR 135, max 160 (not as much climbing but 5+ hours of crazy headwind)