Running

Are carbon-plated shoes worth it for a HM? I'm hoping to run it sub 1.40. I ran my first HM last year (1.46) with Nike Zegamas (I know, not road shoes). I now run with Cloudmonsters

Woah, that's a lot. Even though the impact in the half is not as much is still worth a try. Thanks!

My wild estimate is they help me 1-2 minutes in the half and 4-6 in the full. For the full marathon the bigger benefit is the thick layer of peba foam that saves your legs for last 10k.

I'd say yes. Like I commented in another thread, I can usually get new Vaporflys on eBay for ~$200 or less, which is not much more than my trainers, so cost isn't much of a factor. But the benefit is a lot more for full marathons.

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Founder frens.house

I enjoy my plate shoes and have run in a couple of different brands over the years. When it comes to half marathons, I prefer my Nikes, and for full marathons, I go with Adidas.

ASICS Magic Speed 2 or 3. 
On the 2 I’ve crushed all my 10yo PBs, the 3 still to be tested, but my friends say that are better than the 2 😉

Golden. I plan to run it at an increasing pace so I'll hit below 4:15/km. What's your favorite brand?

I found them to be very useful at paces below 4:15/km. For slower paces the difference is negligible because the running movement (at least for me) is different and they don’t bend in the proper way.