i am new to cycling... i started around 60rpm cadence... i have found that i can go faster and longer with a cadence in the 80-s or so... today in my first century after my legs gave out (50 miles), i found that i had to go up to the 90's... I could spin the cranks, but i had absolutely no push...

this may mean that i need to strengthen my legs more (obviously i need more time in the saddle), but i found i could rely a bit on my cardio (had to give up running due to an injury) to get me through (albeit i had slowed down a few MPH)...

my newbie 2 cents