What is the minimum marathon time you’d need to be able to also break 3 minutes for the 1km

What a dumb question.

2:06:35

I can run a 2:30 marathon but not a 2:20 800.

Wow! So you would probably be capable of a 3:10-3:15 1km. And you’re averaging approx 3:35/km for 42km. Impressive endurance mate!

Minimum time as in fastest time? Odd way to word the question. Do you mean the slowest time possible to accomplish it? I would say that a 50 year old endurance athlete could.come close to continuing at 3:15k pace.

I don't think there is one. When I was competing I could run 1000m sub 3:00 but I doubt I could have finished a marathon (well, I could have walked one possibly, but that's not racing a marathon). Unless I'm misunderstanding the question! Do you mean the equivalent time?

I think you mean "maximum marathon time," not minimum. Bigger numbers are slower times.

Dumb question. I could’ve broken 3 for a K when I was 15 but if I tried to run a marathon I’m guessing it would have been barely under 4 hours.

No, that person would still be around 3:00 for 1km, and probably under

That's impossible.

This is such an odd discussion.

They are two fundamentally different skills. Speed versus Speed endurance. There’s obviously correlation (both involve running) but they develop independently. Well, especially speed.

The sub 3 minute k is rarer because it involves a type of training that the lion’s share of adults don’t really go near. Track, 800 to 1500 races etc. I suppose a dedicated 5k runner will target those splits for threshold work, but even then they have to be pretty fast (a sub 17ish 5k person).

It’s a young person's game.

Marathon running doesn’t (outside of the genuine elite) typically focus on that sort of speed work. I’m not saying it can’t. Simply that most people don’t do it.

Also, get past the age of 40 and ask your hamstrings what they think about a sub 3 minute K.

Any younger motivates athlete w 3’ km capability can walk/jog a 4h marathon with little to no marathon training.It might not be fun, but they’ll make it.

Marathon time for a well prepared athlete is roughly 54-55x the capability for 1km

Silly rule. In high school I could have run 2:32ish but I don’t think any amount of preparation in my life could have made me a 2:17-2:19 marathoner. I don’t think any amount of preparation would have made Seb Coe a 1:59-2:01 marathoner, or Marco Arop a 2:01-2:03 marathoner, etc. Alternately, Kiptum wasn’t going to bust a 2:12 K.

At age 40 I could break 2.10 for 800 and my best marathon was 3.16. Then again I was a lazy trainer.

Bekele averaged sub 3 kms for an entire marathon at age 41.

The limit does not exist...The limit does not exist!

Mid 40s male. In the last year, I’ve run 2:47, 2:48, and 2:49, mostly following Daniels. I could maybe run 3:25 for one km in an all out effort.