Quick Answer
Before running: dynamic stretches only — leg swings, walking lunges, high knees, butt kicks, hip circles, ankle circles, glute bridges. Duration: 7–10 minutes, immediately before running. Static stretches: save for after the run. Key rule: static holds over 60 seconds before running temporarily reduce muscle power — the research is consistent on this.
Why Dynamic Beats Static Before Running: The Mechanism
Understanding why the type of stretching matters makes the routine make sense rather than being a list of rules to follow.
Static stretching — holding a muscle at end-range for 30 seconds or more — works by temporarily reducing the stiffness of the muscle-tendon unit. This increases flexibility but also reduces the elastic recoil capacity of the tissue. Running relies heavily on this recoil: your Achilles tendon, plantar fascia, and the elastic properties of muscle tissue act like a spring, storing energy on impact and releasing it at push-off. When that spring-like stiffness is reduced by prolonged static stretching, the energy return is reduced — meaning more muscular work is required per stride. Studies show this effect is most pronounced with holds longer than 60 seconds and largely disappears with holds under 60 seconds.
Dynamic stretching works through a different mechanism. Moving a joint repeatedly through its full range of motion raises muscle temperature (warm muscle contracts faster and is more compliant), increases synovial fluid production in the joints (reducing friction), activates the neuromuscular pathways between the brain and the muscles being used (improving motor unit recruitment), and elevates heart rate and blood flow progressively. All of these changes make the first kilometres of a run feel better and reduce the risk of muscle strain.
A 2024 PMC review of dynamic warm-up research confirmed that athletes who incorporate dynamic warm-ups experience fewer muscle strains, sprains, and overuse injuries. A 2024 MDPI meta-analysis found dynamic stretching in a warm-up improves both performance and lower limb range of motion. A review of 32 studies found dynamic stretching improved power output by up to 79% across performance criteria. The optimal duration from the PMC review: 7–10 minutes, performed immediately before running (within 15 minutes of the first stride).
The timing matters. Warming up and then sitting down to check your phone for 20 minutes before running defeats most of the physiological benefit — muscle temperature drops, neuromuscular activation fades, and blood flow returns toward resting levels. The warm-up immediately precedes the run.
The 7-Exercise Pre-Run Dynamic Warm-Up
| Exercise | Duration | Primary target | Running purpose |
|---|---|---|---|
| 1. Leg swings (forward-back) | 10 each leg | Hip flexors, hamstrings, glutes | Opens hip extension and flexion range; the most direct preparation for the running stride cycle |
| 2. Leg swings (side to side) | 10 each leg | Hip abductors, adductors, IT band | Activates the lateral hip stabilisers that prevent knee cave and pelvic drop during single-leg stance |
| 3. Walking lunges | 10 each leg | Quads, glutes, hip flexors | Mimics running stride pattern; stretches hip flexors of the rear leg while loading the quad and glute of the front leg |
| 4. High knees | 20m or 20 reps | Hip flexors, core, ankle plantar flexors | Activates hip flexors and primes cadence — the same neuromuscular pattern used in faster running |
| 5. Butt kicks | 20m or 20 reps | Hamstrings, heel recovery pattern | Trains the heel-to-glute recovery of the swing phase — reduces the energy-wasting low foot recovery of fatigued runners |
| 6. Hip circles | 10 each direction, each leg | Hip joint capsule, hip rotators | Increases synovial fluid distribution in the hip joint; improves rotational mobility for running gait |
| 7. Glute bridge (10 reps) | 10 reps, 1–2 second hold at top | Glutes, hamstrings | Activates the posterior chain before the run — particularly important for preventing the quad-dominant running pattern that develops when glutes aren't firing |
This routine takes 7–9 minutes at a deliberate pace. It’s not meant to be rushed — each exercise should be performed with controlled movement and full range of motion, not quickly checked off a list. The glute bridge is the only floor exercise; the rest are performed standing. If you’re warming up on the road before starting a run, the bridges can be skipped on days where lying on the road is impractical — replace with 10 slow bodyweight squats instead.
The Exercises in Detail
1 and 2. Leg Swings
Leg swings are the single most important pre-run warm-up exercise because they directly move the hip joint through the forward-backward and lateral range of motion that running demands. They are a controlled dynamic stretch: the leg swings through its range, the opposing muscles lengthen and contract alternately, and the hip joint is prepared for the full range of the running stride.
Forward-back: stand on one leg, hold a wall or post for balance. Swing the free leg forward and backward in a controlled pendulum motion, gradually increasing the arc over 10 reps. The swinging leg should remain relaxed — the range comes from hip mobility, not from muscular effort to force the leg higher.
Side to side: face the wall. Swing the free leg across the body and out to the side in a controlled arc. This targets the hip abductors and adductors that stabilise the pelvis during single-leg stance — the muscles that prevent the lateral pelvic drop that increases IT band and knee stress in runners.
Running connection: hip mobility determines how much of each stride is available. Restricted hip flexion limits knee lift; restricted hip extension limits push-off power. These swings address both, and our running technique guide covers how hip mobility connects directly to cadence and stride efficiency.
3. Walking Lunges
Walking lunges are the most running-specific warm-up exercise in this list because they replicate the alternating stride pattern of running under load. The front leg works eccentrically (quads controlling the descent) and the rear leg hip flexor is stretched at the bottom of the lunge. Together, these address the two muscle groups most commonly stiff at the start of a run: the hip flexors (from sitting) and the quads (from the demand of the first kilometres).
Step forward into a lunge, lower until the back knee approaches the floor, then drive through the front heel to step the back foot forward into the next lunge. Keep the torso upright — don’t lean forward at the waist. Slow, controlled lunges (2 seconds down) are more effective as a warm-up than rushed ones.
4. High Knees
High knees drive the knee up toward the chest with each step while jogging forward. They activate the hip flexors and prime the neuromuscular pattern of quick, high-cadence running — the same recruitment pattern used during faster running. They also activate the core, which must stabilise the spine against the alternating knee drive.
Focus on posture: stand tall with an upright torso. Don’t lean back to accommodate the knee drive. The arms should swing actively — same pattern as running. 20 metres or 20 reps, not rushed. Quality of knee lift matters more than speed.
5. Butt Kicks
Butt kicks drive the heel toward the glutes with each step, training the hamstring-driven heel recovery that brings the foot back under the hip quickly after toe-off. This is the part of the swing phase that becomes inefficient in fatigued runners — the foot recovery drops lower, increasing ground contact time and wasting energy. Butt kicks as a warm-up prime this pattern before fatigue is a factor.
Keep knees pointed down throughout — don’t let them swing forward. The movement should come from hamstring contraction pulling the heel up, not from kicking backward. 20 metres or 20 reps. Combine these with high knees in alternating sets for maximum effect.
6. Hip Circles
Hip circles are the most direct way to mobilise the hip joint capsule before running. Stand on one leg and draw large circles with the raised knee — clockwise and anticlockwise. This distributes synovial fluid through the joint space, reduces friction in the hip socket, and improves the rotational mobility that allows a smooth running gait. Particularly valuable for runners who have been sitting for long periods before running — desk workers, commuters, or anyone whose hips feel stiff at the start of a run.
10 circles each direction on each leg. These can be done while simultaneously preparing the rest of the warm-up area — they don’t require focused attention once the movement pattern is familiar.
7. Glute Bridge
Glute bridges are included here as the activation component of the warm-up: a brief set of 10 reps with a 1–2 second squeeze at the top activates the gluteus maximus before the run demands it. Runners who don’t activate the glutes before running tend to adopt a more quad-dominant pattern — particularly common in people who have been sitting — which increases knee and lower back load.
Lie on your back, knees bent, feet flat. Drive through heels to lift the hips, squeeze the glutes at the top, lower with control. 10 reps is the activation stimulus — this isn’t a strength set. Our back exercises for runners covers the glute bridge as a full strength exercise and how it fits into a weekly programme alongside these warm-up activations.
How to Warm Up Differently by Session Type
The warm-up before an easy conversational run doesn’t need to be as thorough as the warm-up before an interval session. The physiological demand differs significantly, and so should the preparation.
Easy runs (Zone 2, conversational effort): the 7-exercise dynamic routine above is sufficient. 7–9 minutes, immediately before starting. If you’re genuinely short on time, prioritise leg swings (forward-back and lateral) and walking lunges — these cover the most critical range-of-motion preparation. The easy pace of the run itself continues the warm-up process; the first kilometre at an easy pace finishes what the dynamic routine started. Our guide on easy run effort covers what genuinely easy effort feels like — a proper warm-up means the easy first kilometre doesn’t feel like a struggle.
Interval and tempo sessions: these require a more thorough warm-up because the body must reach a higher performance state before the first hard effort. Add 10 minutes of easy jogging before the dynamic routine, then include 4 strides — controlled 80–100m accelerations at approximately mile effort — before the first interval. The strides prime the neuromuscular system for the faster contractions required by intervals. Going into a hard session without this preparation means the first rep or two are run at well below target quality and at higher injury risk. Our speed work guide covers how strides function within the pre-interval warm-up and why they matter particularly for tempo and VO2max sessions.
Long runs: use the standard 7-exercise dynamic routine. Long runs by definition start slowly and build, which means the first 15–20 minutes of the run itself acts as an extension of the warm-up. Don’t shorten the dynamic routine on long run days — hip mobility becomes more important, not less, over 2+ hours of running when the hip flexors are progressively stiffening.
Morning runs (first thing after waking): the body is at its stiffest immediately after waking — muscle temperature is lowest, joints have minimal synovial fluid circulation, and the neuromuscular system is not yet alert. Add 2–3 minutes of easy walking at the very beginning before the dynamic routine, and extend the routine slightly. The first kilometre of any morning run should be genuinely easy to allow the body to reach operational temperature. Runners who feel consistently stiff for the first 15–20 minutes of morning runs are typically starting too fast relative to their pre-run state.
Static Stretches: Save Them for After
Static stretches — held positions of 20–45 seconds per muscle — are valuable, just not before the run. Post-run static stretching, when the muscles are warm and well-perfused, is the most effective time for improving long-term flexibility. The muscle-tendon unit is most responsive to lengthening when warm, and there’s no performance cost to the reduced stiffness after the session is complete.
The most useful post-run static stretches for runners: standing quad stretch (30 seconds each leg), kneeling hip flexor stretch (45 seconds each side), seated hamstring stretch (30 seconds each leg), calf stretch against a wall (30 seconds each leg), and figure-4 glute stretch (30 seconds each side). Our warm-up and cool-down recovery guide covers the full post-run static sequence and how it connects to the broader recovery process — sleep, nutrition, and spacing of subsequent sessions.
For runners dealing with consistent tightness in specific areas — hip flexors from a desk job, calves from high mileage — daily static stretching of those areas (separate from running, not immediately before) produces the most meaningful long-term flexibility improvements. Stretching once a week doesn’t produce lasting change; daily practice over weeks does.
Common Warm-Up Mistakes
Static stretching before running. The most common mistake — and the one with the clearest research against it. If you’re holding a hamstring stretch at the side of the road for 40 seconds before your run, you’re reducing the elastic properties of that muscle before asking it to work. Save it for after.
Warming up and then waiting. Doing a warm-up and then spending 15 minutes on your phone before starting the run dissipates the muscle temperature, blood flow, and neuromuscular activation benefits. The warm-up should transition directly into the run.
The same warm-up for every session type. A 5-minute walk before a marathon-pace workout is not sufficient preparation. Match the warm-up to the session demand — harder sessions need more preparation time and more progressive intensity in the warm-up.
Skipping the warm-up on cold mornings. Cold weather is the most important time to warm up thoroughly, not the most common time to skip it. Low ambient temperature means lower starting muscle temperature and higher tissue stiffness. This increases the injury risk of cold-starting a run.
For beginner runners establishing their first consistent training habits, our beginner running guide covers where the warm-up fits alongside building mileage, learning effort levels, and structuring the first weeks of training. The warm-up habit, established early, becomes automatic within a few weeks and removes any sense that it’s optional extra time rather than part of the run itself.
Run Better With a Structured Training Plan
SportCoaching's running plans include session-specific warm-up guidance alongside your weekly training — so every run starts with the right preparation and the right effort, from easy days through to your hardest interval sessions.
FAQ: Stretches Before Running
Should you stretch before running?
Yes — dynamic stretching only. A 2024 MDPI meta-analysis confirmed dynamic stretching improves both performance and lower limb range of motion. A review of 32 studies found it improved power output by up to 79%. Static stretching before running temporarily reduces muscle force and should be saved for after.
Why is static stretching bad before running?
Static holds over 60 seconds temporarily reduce the muscle-tendon unit’s elastic recoil — the spring-like property that contributes to efficient running mechanics. This reduces power output. The effect is minimal with holds under 60 seconds, which is why brief static stretches don’t cause problems, but the prolonged holds most runners use pre-run do.
How long should a pre-run warm-up be?
7–10 minutes for an easy run. Add 10 minutes of easy jogging plus 4 strides for interval and tempo sessions. The warm-up should happen immediately before running — within 15 minutes — since the physiological benefits (elevated temperature, blood flow, neuromuscular activation) dissipate if you rest afterward.
What are the best dynamic stretches for runners?
Leg swings (forward-back and lateral), walking lunges, high knees, butt kicks, hip circles, and glute bridges. Together these cover all the primary muscle groups and movement patterns of running in 7–9 minutes.
Do you need a longer warm-up before interval sessions than easy runs?
Yes. Interval and tempo sessions need 10 minutes of easy jogging before the dynamic routine, plus 4 strides before the first hard rep. The first interval without this preparation is both lower quality and higher injury risk than with it. Match warm-up depth to session intensity.
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