The Race-Morning Warm-Up and Post-Finish Cool-Down: A Timed Routine
The warm-up and cool-down get skipped more than almost any other part of race day — runners are either too nervous to bother in the corral, or too relieved to think about it once they've crossed the finish line. Both are mistakes: a good warm-up primes your legs for race pace instead of asking them to find it cold, and a good cool-down starts your recovery clock early instead of leaving it to chance. Here's a timed routine for both.
The Race-Morning Warm-Up: A Timed Routine
Work backward from your corral time. This routine assumes you're in position and ready to start with about 40 minutes to spare — adjust the clock if your race has earlier or later corral closures, but keep the same sequence and proportions.
| Time before start | What to do |
|---|---|
| T-40 min | Arrive at the start area, drop bag or gear check, use the bathroom (lines are real — budget extra time) |
| T-30 min | Begin a 5-10 minute easy jog, well below race pace, just enough to raise your heart rate and body temperature |
| T-20 min | Dynamic mobility drills (below), 5-8 minutes total |
| T-12 min | 3-4 strides, roughly 20 seconds each at close to goal race pace, with 30-45 seconds of walking recovery between each |
| T-5 min | Head to your corral, take a final sip of water, do a couple of arm swings or light bounces to stay loose while you wait |
Dynamic mobility drills (do these after your easy jog, not before):
- Leg swings: Hold something sturdy for balance, swing one leg forward and back 10 times, then switch. This loosens the hip flexors and hamstrings through a full range of motion.
- Walking lunges: 10 total (5 per leg), stepping forward into a lunge and pushing off to the next step. Stretches hip flexors while activating glutes and quads.
- High knees: 20-30 seconds, driving knees up while moving forward at a walk-to-jog pace. Activates hip flexors and gets your cadence pattern moving.
- Butt kicks: 20-30 seconds, jogging while kicking heels toward your glutes. Loosens the quads and rehearses a quicker turnover.
Skip static stretching (holding a stretch without movement) before the race — research on pre-exercise stretching consistently shows it can temporarily reduce muscle power output, which is the opposite of what you want heading into 13.1 miles. Save static holds for after you finish.
Cold-weather adjustment. If race-morning temperatures are below 40°F, add 5 minutes to your jog and keep an old throwaway layer on until your corral closes — you want to arrive at the start line already warmed up, not shivering. See our guide to handling unpredictable race-day weather for pacing and gear adjustments beyond the warm-up itself.
If You're Short on Time: The 10-Minute Compressed Warm-Up
Long bathroom lines, a delayed shuttle, or a later-than-planned arrival can eat into your 40-minute window. If you're down to 10-15 minutes before you need to be in your corral, prioritize in this order:
| Priority | Drill | Time |
|---|---|---|
| 1 | Easy jog in place or short out-and-back | 3-4 min |
| 2 | Leg swings and walking lunges only (skip high knees/butt kicks) | 2-3 min |
| 3 | 2 strides at race pace, 20 seconds each | 1-2 min |
| 4 | Arm swings and light bouncing while walking to your corral | Remaining time |
Cutting mobility drills entirely is worse than cutting their duration — even 2-3 minutes of leg swings and lunges gets your hips and hamstrings moving through range before you ask them to hold goal pace. What you should never skip is the easy jog: starting a half marathon with genuinely cold muscles is the scenario the whole warm-up exists to prevent.
During the Race: No Warm-Up Needed, Just Pacing Discipline
Once you're moving, the "warm-up" effectively continues through your first mile or two at a controlled effort — this is covered in depth in our guide to pacing a comfortable, manageable half marathon, which lays out exactly how much slower than goal pace to run early on.
The Post-Finish Cool-Down: A Timed Routine
The instinct after crossing the finish line is to stop entirely — find a curb, sit down, be done. Resist it for the first 10 minutes. Stopping abruptly after sustained exertion can cause blood to pool in your legs, which is part of why some runners feel light-headed right after finishing.
| Time after finish | What to do |
|---|---|
| 0-10 min | Keep walking through the finish chute — collect your medal, water, and a snack while moving, not standing still |
| 10-20 min | Continue walking at an easy pace, or transition to a very light jog-walk if you feel good, until your breathing and heart rate have settled |
| 20-35 min | Static stretching, holding each stretch 20-30 seconds: calves, quadriceps, hamstrings, hip flexors, and glutes |
| 35 min+ | Change into dry clothing if yours is sweat-soaked, especially in cold weather, and begin refueling with a mix of carbohydrates and protein |
Static stretches worth prioritizing, since these muscle groups absorbed the most impact:
- Calves: standing wall stretch, one leg back, heel pressed down, 20-30 seconds per side.
- Quadriceps: standing, pull one heel toward your glutes, 20-30 seconds per side.
- Hamstrings: seated or standing forward fold with a slight knee bend, 20-30 seconds.
- Hip flexors: kneeling lunge stretch, pressing hips forward gently, 20-30 seconds per side.
None of this needs to be intense — the goal is gentle range of motion, not a deep stretching session while your muscles are already fatigued and slightly inflamed.
For what comes after this first hour — nutrition timing, sleep, and a return-to-running timeline over the following days and weeks — see our full guide to physical recovery after a half marathon.
Frequently Asked Questions
How long should a half marathon warm-up be?
Plan for about 20-25 minutes of active warm-up, starting roughly 40 minutes before your corral time to leave room for gear check and bathroom lines. That's enough time for a short easy jog, dynamic mobility drills, and a few short strides without leaving you fatigued before the start.
Should I run before a half marathon warm-up?
A short easy jog of 5-10 minutes, plus 3-4 strides of about 20 seconds each at close to race pace, is enough for a half marathon. You're raising your heart rate and rehearsing race pace, not building fitness, so keep it easy — save your legs for the 13.1 miles ahead.
What should I do immediately after finishing a half marathon?
Keep moving. Walk for 5-10 minutes rather than sitting or lying down right away, since continued light movement helps clear metabolic waste and prevents the light-headedness that can come from suddenly stopping. Collect water and a small snack during this walk, then move into stretching once your heart rate has settled.
Is static stretching before a race a bad idea?
Static stretching (holding a stretch without movement) right before a race can temporarily reduce muscle power output, so it's better saved for after the race. Use dynamic, movement-based drills like leg swings and walking lunges to warm up, and save static holds for your cool-down once you're finished.
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