Predictions on my two athletes 5k's.

You don't need an apostrophe.

hard to say, but I'd roughly guess

Runner A: 16:30-16:40

Runner B: 16:50-17:10

they've got fairly decent speed in comparison to their 4M tempos. I wouldn't be able to do the 600 breakdowns or the faster of the 1200s but have done 5:12 pace for 4M when in shape, but maybe they weren't pushing the tempos much. I'd say that low to mid 16s right now and mid 15s when they have gotten the tempos down to low 21.

I say 15 mid to high, a lot rest on those workouts which is fine for getting in shape but not for a predictor. Equal jog after a 600 is like a 3 minutes of rest so going that fast doesn't show much.

the 600 was jogged in about 2:20. as for the other predictions, relative to their previous fitness i thought mid 15s was in the cards

if i were going out for a 4M tempo right now, it would be 5:35ish pace. but theres no way i'm doing those speeds for the track work. so it depends on how hard that tempo was, honestly. i'm a 15:40s guy with a crap 1500 (4:15 maybe)so if i could do that workout i'd think i should be running the 1500, not the 5k. XC is a long ways away. why are you doing this speedwork now? seems like a peaking workout

i'll predict sub 16 for both of them if they run together and don't go out faster than 5 flat.

Were the tempo and breakdowns part of the same workout? Like, were they on the same day? I'm a little confused by the wording. I'm guessing they were separate workouts.

The 1200s seem like a they may have been a slightly better performance than the tempo. At any rate, these seem like similar performances to what I was doing a few years back, so I'd say mid to upper 15s is a pretty decent guess.