What's your warm-up routine?

Jog 0.5 miles, a few dynamics, jog 1 mile, 0.5 progressing to tempo, 2x200 at mile effort

I get a GPS connection on my watch. A few minutes before the race. If I remember.

Assuming you are well-trained, that is nowhere near enough. Depends on the race length a bit, but for a 5K or 10K, here is what I recommend.

First, get up the morning of the race and jog 2 miles before showering and eating breakfast. Unless the race starts really early.

Some light stretching 75 minutes before the race. Hydrate, use the restroom.

Then, jog 2 miles again at about 60 minutes before the start, and stretch out. Bathroom again.

Do a couple of easy strides. Then, do a couple of 400m accelerations, reaching race pace for the last 100m.

Stretch some more. Change into your kit.

Finally, as close the race start as possible, do 8-10 stride outs.

AIS (activated isolation stretching)

Resistance band activation

10-20 minutes easy

Drills

2 x 1 minute on / 1 off (around threshold effort)

If switching shoes do now

A few strides

Thanks to all the serious replies. When would you finish your warm up? I normally finish around 10 minutes before race start, but I've heard some people say finish 30-40 minutes beforehand. That seems a little too long to me

Do whatever you usually do before hard workouts. Race day isn’t the best time to try new things.

I try to finish my warmup no more than 5 minutes before the start. I think 10 minutes is a long time to stand around waiting. In terms of content, you might consider adding some dynamic stretches and drills, as others have said. But otherwise your warmup sounds fine.

Maybe your warmup routine isn’t the issue. Feeling sluggish could be related to sleep, nutrition, and/or hydration. Are you getting a good night of sleep before the race? Do you eat breakfast the morning of the race? If so, what? Are you hydrating well enough?

I have experimented and found the best warm up to be:

Day before the race 30 min jog with 4 Pick ups / Strides at the end.

Race Day: jog 10 minutes to the start

This is for 10k and up.

My warmup for harder than threshold sessions/races. Mind you I’m a 20 min hobby jogger right now

15 min jog

2 min threshold

4x15 sec strides

I'd probably do an easy 6 miles or so after the second bathroom trip, before the strides.

Jog 20 minutes, dynamic stretches, drills, strides/accelerations, wait around, jog some more, 2x2min at threshold, wait around, jog some more, final strides/accelerations.

During the summer months, I'm sweating like Mike Tyson at a spelling bee after a slow one mile jog. I figure sweating like a whore in church counts as "warmed up".

I try to time it to end about 5 minutes before the start, but that's tough to do depending on race logistics. Plus you never know how late the race will start as they make announcements, play the national anthem, have a moment of silence, and thank all the sponsors.

Jog 1-2 miles. Easy dynamic stretching. 4 strides. And then the slightly weird thing I do is...

4 "starts" where I basically just run for a minute or two at my anticipated race pace while imagining that it is the first minute or two of my race. I ideally like to finish 5 minutes before my race, but that's obviously not always possible.