Oliver - as a fellow marathoner, I'll disagree on this. 26.2 is just a long run, with ever degrading legs. Even with the drafting behind the phalanx of runner, one's legs are being put through some rough work. I watched the Kipchoge doing this race. He was a beast, not a lab rat. Note that two other runners, with all the advantages, couldn't come close to what he did.
For me, this was confirmation that humans do indeed have room to push the current world record further down.
For me, this was confirmation that humans do indeed have room to push the current world record further down.