You'd have to be mad to do a 12hr on there...
Madder still to do two and a bunch of 100s, 50s, 25s. Not sure I've done a 10 there though but I do remember quite a few weekends spending up to 10hrs on it riding up and down because, you know, specificity...
@hippy started
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You'd have to be mad to do a 12hr on there...