Thanks mortysct !

Thanks Francois . I did.

funny, i was gonna post the same link. Same questions get asked over and over on this forum....

I just started a phase of 6x4 intervals myself in prep for Mt Lemmon and Mt Graham climbs in a few weeks.

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some days you're the windshield some days the bug

Are you doing the Lemmon TT?

i wish! Sadley i won't be there until the week after. Mine will a solo TT.

you doing it?

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some days you're the windshield some days the bug

Carl, I'm curious if you're doing these intervals on a hill, flat ground, TT bike?

I personally find 115% too easy on a hill and just about right on the flats.

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I'm out of town, otherwise...