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  • Just from experience as I ride it quite often as a bit of 'training'

    The first half is the hilly bit, but they're all less than 70 meters so nothing too challenging.
    The left hand under the railway bridge into Darnicre Hill is tight and fairly hidden, so at least in training take that a bit carefully
    Cucumber Lane is beautiful
    The right from Cucumber Lane into Little Berkhampstead is tight and often gravely though perhaps they sweep that for the tt (?)
    There's usually a head wind on the B158 so I find that the hardest bit of the course. I think if you'd gone out hard you could really blow on the hill up to Esseodon.

    I'd ride it all to 10s power except for the section from the top of Carbone Hill until the right turn in Little Berhampstead.

    iana tter

  • Echoing fredtc's comments, I'd definitely ride with power. For me the 3s would be really useful to avoid going overboard on the early climbs.

    The B158 back from Hertford is the place to get really aero, but again be aware that the climb south, through Essendon, is very draggy so if you've gone too far into the red then you will lose time hand over fist here.

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