Vertical gain?

gbs Posts: 450
On the Box Hill Challenge (127m ascent, ave gradient 5% and max 10%) hotshots are achieving nearly 1200 vertical metres per hour.

What would a top pro achieve on Box Hill?

How does the gradient of BH compare with say Alpe d' Huez and what climbing rates do the pros achieve on these long climbs?

Looking forward to the TdF (from my sofa) BTW which channel this yr? I think I read ITV4.
vintage newbie, spinning away


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  • gbs
    gbs Posts: 450
    To Kingston Wheeler: many thanks for the useful resource and info generally
    vintage newbie, spinning away
  • Greenbank
    Greenbank Posts: 731 ... ez_ascents

    There are various records and measuring distances, but taking Pantani's "record" of 23.08kph and multiplying by an average grade of 7.9% we get:

    23.08 * 0.079 =~ 1820 VAM/hour.
    If I had a baby elephant signature, I\'d use that.
  • ugo.santalucia
    ugo.santalucia Posts: 28,301
    The numers you guys quote are for long climbs... on a short one like that I assume a good PRO can easilty go over 2000 mt/h

    To give you an example,

    I do 1020 mt/h on 3 miles at 5%, but

    Only 920 on 7 miles at 6.5% (Oropa, Italy) and finally

    820 on 10 miles at 7.5% (Col Tzecore, Italy)

    So it's a rather tricky one to predict for a short burst like Box Hill...
    left the forum March 2023
  • mark_d
    mark_d Posts: 61
    Alpe d'Huez obliges you to use something like 39x23.

    I'd have been very happy to be able to ride a 39x23 up ADH :~) By the time I reached it on the Marmotte 34x25 was only just enough.