I'm not sure, as I don't ever do an all-out mile in my training. My Garmin says my fastest mile was a 7:38 during a 10k race in March, 2022, where I averaged 8:06 miles for the 10k. But I was in great shape then, about 35 pounds lighter than now. The month before then, I ran a half-marathon in 1:56:32, so 13.1 miles faster than 9:00 on average.
Nowadays, when I'm doing tempo workouts, I typically have some miles in the mid to high 9's. So, I would guess that if I went all-out, I'd probably be around 9:00, maybe a few seconds faster.
I have a couple of weeks to goof off before I start training for the KC Marathon, so maybe I'll try to run an all-out mile in one of my workouts, just for fun.
I'm mostly planning on doing a lot of 8+ miles slow runs, as those are enjoyable for me and help me lose weight, which I need to do. I'd like to get at least 10 pounds lighter before my 60th birthday, in December.
I'm very psyched these days about my running because my constant right hip pain hasn't been bothering me as much since I started doing knee squats a couple of times a day, holding the squat for at least 30 seconds. That's strengthening some muscles and stretching the IT Band. My knee gets a little tender from that, but the tradeoff is worth it, as it feels great to get to run like I used to, without worrying about my stupid hip.
