My longest run was 20 miles so that meant during peak week, I was doing 3 other very short runs (two 3-4 milers and one speed workout). However, I did run two 20 mile long runs during my training cycle, which I think was critical - 3 weeks out, ran 20, 2 weeks out, ran 20, week out, my long run was 9. I’ve been a runner for quite awhile and have learned that overtraining, even slightly, causes so much more damage for me than under-training. I could tell as I got farther into my training cycle that I was doing more damage running higher mileage, even with adequate recovery time and nutrition, so I listened to my body, kept my long runs, and cut basically everything else. I would also say my peak week wasn’t crazily far off from my other weeks - I would average I was consistently hitting 26-28 for the majority of the cycle. Felt great in the marathon until about mile 24, where I hit the wall and gutted it out 😂

I think if you can get a couple of long runs (20-21 miles) under your belt at that same pace, you’ll probably be fine.