Originally Posted by
Az B
But mainly, it's all about your heart rate. Keep it just below your LT and you can go for a very long time. Get your heart rate too high, even for a short period and it makes the rest of the climb a lot harder.
Az
This really works. I have no HRM so my homebrewed and unscientific way of keeping an eye on my cardiovascular system is to try not to let my breathing exceed my rpms*1.5---i.e. I exhale with every three pedal strokes. At slower hillclimbing speeds this keeps a lid on things.