I'd take the 18 years old with a grain of salt but 26:46 is incredible at any age. Fastest time on road/track since Rupps 26:44 at the Pre classic in 2014. I hope that some of these guys actually run track and attempt some fast 10,000m races. With road performances like that, they have to be close to some all-time top performances close to those of some of the greats.
Also probably of note here is that Kipruto and third place Kimelli are coached Br. Colm O' Connell.