Is a sub 34:00 10k reasonable for me

I assume you menta 16:36 5k🤣 Assuming that is a some what recent PR and you will be racing under similar circumstances, yeah it is pretty reasonable. Most people who do decent mileage (i.e. over 40) tend to run 10ks about 10-15s/mile slower than 5k pace.

How recent is you 16:36 5km? If recent then definitely achievable by May. At the present time, given your relatively low mileage you could probably hit around a 34:40. With a mileage build-up over the next 5 months I would expect your 5km to drop somewhat also. A sub 16:20 would be realistic and a 10km of 33:50ish

Might be doable. 16-mid projects to more like 34-mid, & that's with good mileage/training. It's typical to see someone closer to 35:00 with your 5k. No reason not to try to train for something a little faster & see if you can get there.

I needed 15:30 to break 35 and 15:00 to break 34. The 10k is such a challenging race

This is not typical. It depends on your aerobic capacity and how long you’ve been training. And your age. A 15:00 5k runner with a decent aerobic base and good mileage over many months shouldn’t have trouble breaking 32:00.

You were right. I ended up running 34:58 that spring. I did not pb in the 5k though. This January I ran 16:12 indoors and have been building fitness since then. I think I should clear 34:00 this time around.

I broke 32 minutes but never broke 15. To each his own.

Unless you're very strong aerobically (and lack the relative speed) you're gonna need another 20 seconds over the 5k to be in the ballpark.

my 10k PB is 33:54, this year. my 5k PB is 16:45 but i haven't raced it properly for about 2 years. I think I'm in about 16:20 shape now.

if you're a similar sort of runner to me you'll probably run 34:0x in a bad race or non-optimal conditions, you might run 34:1x. if you had a great race with optimal pacing and people dragging you along, you could run 33:5x

Yep -- should be able to run 33-mid & take some good time off of your 10k. Good luck OP!

16:12 indoors will probably see you under the 34 minute barrier by 10 or 20 seconds. The only problem would be if you go from wearing spikes on a fast track to a road 10k that may not be as fast, then you might struggle.

You should do it though

how are you getting 33 mid when his 5k is 16:36. double that time is 33:12 so you're only allowing him to slow down by 18 seconds over twice the distance 😐

oh ignore that I just saw the updated PB of 16:12

Yikes I must be bad at the 10k, since I have run 15:48 in the 5k and 33:34 in the 10.

I can see the OP under 33 soon if he is strong aerobically. 16:12 is good.

I've ran 15:54/ 32:49 (and 32:55) 2-months apart...OP, you're doing great!

*run not ran....

My PRs are 34:03 and 16:12. You got this.

I ran 15:51 yesterday on 4:54, 5:04, 5:17 splits. I honestly think I might be able to go closer to 33:00, if I pace the right way.

Agreed. That looks like at least 15:40-15:45 optimized. Someone with good endurance could challenge 33:00 with a 16-flat.