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Sep 2021
11:34am, 30 Sep 2021
35,305 posts
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SPR
When you say a little heavier, I guess we're talking 10g here?!
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Sep 2021
11:39am, 30 Sep 2021
35,306 posts
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SPR
If two shoes are pretty much exactly the same, I'm going for the lighter one every time. If they're different, well then there are likely other factors that have an influence other than weight.
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Sep 2021
12:00pm, 30 Sep 2021
3,835 posts
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J2R
Yes, SPR, 10-15g. Not a lot, for sure. But the extreme lightness of the supershoes has been one of the most touted features of them. The Booms are an odd shoe, I would say - sold as a marathon shoe and criticised in reviews as being too harsh and firm for that, when they might better be sold as a short race shoe. When I use them for 400m reps in my local park, I typically go a couple of seconds faster per rep for the same effort as I do in my normal training shoes (which are themselves pretty light and fast, they're not big clunky things).
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Sep 2021
12:13pm, 30 Sep 2021
35,307 posts
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SPR
None of the supershoes have "extreme lightness" IMO. They aren't trying to be either (if that was the main goal, they could get lighter), they've just managed to get a lighter cushioning to do the job that was done by heavier materials previously. Same or better cushioning in a lighter material is going to be faster everything else being equal.
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Sep 2021
8:31pm, 30 Sep 2021
359 posts
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whiteflash
I have pair of box fresh 4%. How far do you reckon I should run in them before my mara?
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Sep 2021
9:20pm, 30 Sep 2021
13,553 posts
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ITG 🇮🇸
I have pair of box fresh 4%. How far do you reckon I should run in them before my mara?
5k and was enough for me. But I'm not very good at the best of times.
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Sep 2021
9:52pm, 30 Sep 2021
5,263 posts
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Windsor Wool
Have you run in 4% previously WF. I yes then I think ITG’s advice is about right. If not, then maybe 10k - 10 miles?
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Oct 2021
6:59am, 1 Oct 2021
361 posts
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whiteflash
I haven’t run in VF before. Thanks WW, may aim for a 7 or 8 mile spin.
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Oct 2021
12:31pm, 1 Oct 2021
5,265 posts
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Windsor Wool
oh, well prepare for the experience of a running lifetime 
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Oct 2021
9:20pm, 1 Oct 2021
35,967 posts
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Hills of Death (HOD)
I’ve got a pair of 4%
VF next % (5k on)
AF SAME new
And spare VF off someone who didn’t like
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