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80km up! MotherF! End of the payment.
And one more thing...that last 10k, jeez!
Yeah the dirt don't too too rough, but it lasts for 7km and is like that last 10k of pavement: 14–18%. Too much even for a 36×25. Greg could do it though.
Is there any water along the way?
Alex: not really that I can recall, except maybe a few farm houses 1/3 of the way.
Jeffrey, thank you so much for input! I'm planning to do exact same ride and will not have any support so naturally some doubt here :)