HALF MARATHON TIME PREDICTION

DNF

Those are some BIG sessions OP. Sub-1:09 for sure >>> sub-1:08. Depends on what kind of weather you get with how aggressive you want to be & how fast the course is. The 7 @ 5:12 should be a pretty good predictor. Probably able to do that right @ half pace, maybe T if it felt comfortable enough. The 10 @ 5:21 should be a touch slower than half pace. The solo 5k is worth sub-1:09. I would probably go out right @ 5:15 (even 5:20 1st mile, work down to 5:15 by 5k) pace through 10k. Move a little after that if you can.

Share your result after your race.

No mention of your longer runs 68:22

can i please have those genetics

I think you are in 66:30 shape on the same terrain/hills/surface as your workouts, so I'd expect 67-68 min.

I'd also assume you're in 8:25 3k, 14:20 5k, and roughly 2:22 for a marathon with the same assumptions for the half I made.

Sorry for all the posts but I'm bored.

To taper, you can reduce some mileage (but a reduction in intensity is better), but make sure to do a small amount maintenance threshold work (5:15 - 4:55/mi) and a larger amount of aerobic threshold work ( 5:45 - 5:15, but closer to 5:15) to maintain fitness with less stress.

Dang, thank you guys! A lot faster predictions than I was expecting lol. I’ll keep folks posted how the race goes. 10 days until race day!

....you think a 14:20 guy runs 2:22?

World class women can run 2:22 without breaking 15 minutes. Have you seen Japanese marathoners' track times?

Also, to the OP. You may be a beginner, but I think you'll quickly realize from observing your club mates that an "average club runner" can't solo a 15 flat 5k in training as a workout... It's good to be humble, but don't be afraid to recognize your gift and potential.

I don't think he's a 14:20 guy ... I think he's a guy who could run sub 67 on the right day and while training for a half marathon, could run 14:20. If training for 5k specifically, I think he's a sub 14 fella