Idk, I’m about 6’2 and genuinely don’t think I could make it to 140 lbs without dying or dealing with serious serious health issues. There’s not a lot of me left when i’ve gotten to 150. I do have a wider frame though. I had a highschool teammate that raced at 6’1 135 lbs and he was VERY skinny. Like definitely noticeably skinnier than Kiptum. Similar BF% but he had significantly less leg muscle (somehow).
Obviously being able to get to an unnaturally low weight/ BF% while still maintaining heavy training and good race performances is part of what makes a world class marathoner talented, but I’d be really surprised if Kiptum is less than 135 and I bet 140-143 is accurate.
I also doubt you look anywhere near fat at 143 5’11. Doesn’t that make you mildly underweight by medical standards? I’d wager you probably don’t have much muscle mass nor much fat mass right now, but enough of a lack of muscle and just enough fat that you don’t look super toned. Kiptum may be rocking with 5-7 lbs less of fat and 5-7 lbs of muscle more than you which will make a huge difference at 140ish lbs.
I looked fat even at 125lbs
I have no muscle at all, but I have tons of fat on my thighs, love handles and glutes.
