There are 3 hills that have defeated me big time and I need to go back and attack them properly. They are in no particular order: -
"The Struggle" - Road from Ambleside to Kirkstone Pass, Cumbria
"Rosedale Chimney Bank" - North York Moors. I was lured to it by the big blue signs shouting 1:3, I swiftly gave up on the second hairpin in top granny gear on my MTB.
Salcombe Hill Road, out of Sidmouth Devon. Just a pretty sharp climb.
I thought Rosedale chimney would get mentioned eventually, I did a 100 mile round trip just to climb it last year. At one point I became aware of the fact I was riding up on just my back wheel so I had to lean forward quickly to get the front back on the ground. To steer on the steepest part after the second hair pin, I found you don't turn the bars, you just lift the front wheel off the ground, pivot on your back wheel and plonk the wheel back down again when its pointing in the right direction.
Even the sheep just lay next to the side of the road watching your progress, probably expecting you to fall off
On the night at home afterwards I felt sick about what could have happened if I had have gone over backwards and cracked my swede on the ground.
I have no plans whatsoever on ever doing it again