Could Josh Kerr make the US Olympic Marathon team?

No.

He's Scottish.

Maybe not, but if he trained for a year he would likely break the US national record.

No because he’s not american

No. He’s not American

I dont know about the marathon team but probably can make the current 800 team!

the course was 700 foot downhill, over 50 foot per mile. That's a solid minute, probably a littl emore. So he's like a 63 flat half marathon runner. But he's a world champion 1500 runner, meaning he sees quite a bit of drop-off going to the marathon. A 63 half marathon runner who is strength based could run ball park 2:13. But Kerr is bringing a lot of speed into the half and holding on, he'll see more drop-off going to the marathon. I'd predict he would run 2:17 or so in his current fitness. Maybe 2:15 at best.

Strength is genetic just like top-end speed, and he is a 1500/5000m runner There’s no chance he could run a fast marathon.

I hear he actually ran this to qualify for the trails in Orlando. Will be interesting to see how he gets on.