I'd go with Geoffrey Kamworor. If he was running half marathon wr pace, someone would have to run 26:34 to lap him at 10k, or 57:17 for the half marathon which would never happen. There would only be like 5 guys max who he wouldn't have lapped by the half marathon, if they ran great races. And with his 2:06 full marathon pr, he could grind it out and pass the last couple guys who are dying. The only guys I could see beating him are Eliud Kipchoge and with a slim chance Mo Farah. Thoughts?