
I ramble on and run
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Many factors including your running gate, (they are more effective if you heel strike or mid foot strike - but do t change your gate because of this), the course etc. They are definitely faster, but over half marathon you also need them to be more efficient. You’ll definitely be faster but hard to say by how much.
YES! It helped me a lot. Recovery time has come down, flexibility increased and therefore likelihood of injury down. I have also mixed it in with hip mobility specific sessions. Would recommend Adrien.
If it’s your first marathon I would suggest getting something without a carbon plate in it. Vaporflys are designed to make you that 0.1% faster once you have expended every other avenue. It’s. The equivalent of buying a £10,000 full carbon road bike for your first ever race.
As you go beyond 1 hour the pace you can hold will start to be affected by the amount of energy you’re utilising and the regulation of your HR. If you have an efficient gate (use less energy/effort to move a certain speed) you will be able to keep your HR lower, body temp lower and maintain more energy.