5,000 meters vs 800m

or is a heart rate moniter more accurate for an individual such as my self who trains alone?

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How can you predict accurately between those two - people are different.

If you take an 800m specialist who runs 2min, its unlikely they'll be anywhere near 15min for 5km. On the other hand, a decent ~15min 5km runner should be around ~2min for 800m.

The point is there is not a one to one mapping between 800m and 5km performance.

You need to model the rate at which you slow down with increasing distance. Take your time per lap difference between 400m and 800m. Add this to your time per lap each time you double the distance. Keep doubling up to 6400m if you want a slightly conservative pace per lap, or do some calculations using log(base2) to get a value for 5000m.

IF your 400m and 800m times are an accurate reflection of your best capability, this model fits very very well up about 10km.

you jest surely sire.

I know a couple of sub 15' 5000m guy, they can probably

run 2 minutes or under for 8.I know girls who are 2.15/2.30 for 8 and they can probably only run 17/17.30 for 5K.Mind you for girls 2.15 is good and 2.30 is medium good.If you can only run 2.15 for 8 you can't run under 15' or 5K that's sure. Find me an example and i'll believe it.Take the median for 800 2.225 that's just about 20k/h.

a fraction better. To run 5K in under 15' you need to be running at the same speed for over 6 times as long.

You're right. NO WAY you can run sub 15 if you're only a 2:15 800m runner. You would probably require a sub 2:05, maybe a sub 2:10 with incredible endurance.

not i think whatever his endurance ratio is he'd need to able to run under 2'. He says the 2.15/2.30 was a cake walk, OK but that means nothing really,

As a guide, my 800m PR is 2:12 and my 5,000m PR is 15:47. Admittedly I have never focused on the 800m (even with my slow twitch fibres I should be able to edge under 2:10) and I am more of an endurance runner. My 5,000m PR is easily my strongest. From that logic I say that a 2:05 could be converted to a sub 15 but I can't say that I have an example.

well i don't know, knock 5 secs off your 8 time is nothing to do with knocking 47 secs of your 5k time really.I would doubt as i say that anyone who can't run an 8 flat out under 2' can run a 5K under 15', statistics would tend to prove me right i think.

There is a big difference in the 47 second improvement as opposed to the 5 second one. But I know that others have better endurance then me. Plus I haven't always been consistent with my training. For someone who does 100 mile weeks it could be possible.

I do not plan to undertake these ideas and run sub 15! Right now sub 17 will do me.

My PBs: 5000 track 14:28, 800m 1:58 - In my opinion my 800m is weak compared to the 5k but then I've never been particularly fast. One of my training partners had a 800m pb of 1:46 and can only just dip under 15:00 - he's got great natural speed but not so good endurance.

So it depends where on the speed---strength scale you lie.

E.

if he can run as fast as 1.46 that's the reason.Don't think you can run THAT fast with a muscle structure that would be any conceivable use to you at 2K and upwards,I mean Tyson Gay is probably pretty crap at XC right?

dean moriaty wrote:

if he can run as fast as 1.46 that's the reason.Don't think you can run THAT fast with a muscle structure that would be any conceivable use to you at 2K and upwards,I mean Tyson Gay is probably pretty crap at XC right?

Precisely my point - a conversion of 800=>5000 depends entirely on where the individual athlete sits on the speed---strength scale. Of course, your location on that line can be modified by training schedules etc.

As it happens, that 1:46 800m runner won the Welsh Road 5k Championships this year...

dean moriaty wrote:

if he can run as fast as 1.46 that's the reason.Don't think you can run THAT fast with a muscle structure that would be any conceivable use to you at 2K and upwards,I mean Tyson Gay is probably pretty crap at XC right?

Tyson Gay is not a 1.46 guy, that's for sure.

Take Steve Scott, he ran a 1.45('82) and 13.30 ('87).

Or Jim Spivey with 1.46 ('82) and 13.15 ('94)

Or Steve Ovett with 1.44('78) and 13.20('86)

Or John Walker. 1.44 ('74) and 13.19('86)

Or Steve Cram 1.42 ('85) and 13.28 ('89)

Or Seb Coe 1.41 ('81) 14.06 ('80)

Or Nourredine Morceli 1.44 ('91) and 13.03('94)

Or Hicham El Guerrouj 1.47 ('95) and 12.50 ('03)

Or Alan Webb 1.43 ('07) and 13.10 ('05)

Running as fast as 1.46 in the 800 does not counting out running a fast 5K.

880m is the hardest event in t/f to run - if you run it correct.

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Tyson Gay is not a 1.46 guy, that's for sure.

Take Steve Scott, he ran a 1.45('82) and 13.30 ('87).

Or Jim Spivey with 1.46 ('82) and 13.15 ('94)

Or Steve Ovett with 1.44('78) and 13.20('86)

Or John Walker. 1.44 ('74) and 13.19('86)

Or Steve Cram 1.42 ('85) and 13.28 ('89)

Or Seb Coe 1.41 ('81) 14.06 ('80)

Or Nourredine Morceli 1.44 ('91) and 13.03('94)

Or Hicham El Guerrouj 1.47 ('95) and 12.50 ('03)

Or Alan Webb 1.43 ('07) and 13.10 ('05)

Running as fast as 1.46 in the 800 does not counting out running a fast 5K.

It depends entirely on the physiological make up of that 1:46 runner.

You quoted a bunch of guys who were more endurance based 800m runners. If you took a guy like Wilson Kipketer or to the extreme Alberto Juanterana then no way will those guys run "good" 5ks. For instance, during Khadevis Robinson's "base" phase I've seen him run only mid 15's for 5ks on the road, which is good, but he's a 1:43ish guy.

If an 800m guy is a predominately Fast Twitch, speed, 800m guy, then he's not going to run as well in the 5k/10k whatever.

pvs wrote:

880m is the hardest event in t/f to run - if you run it correct.

Yeah, those last 80 meters of the 880m are killer. If you run it right.

880m is the hardest event in t/f to run...