The adductor longus is the most commonly injured muscle in the adductor group and one of the most commonly tight muscles in the inner thigh. It is the muscle most frequently involved in groin strains, the one that produces the characteristic groin pulling sensation during kicking and lateral movement, and the one that most generic inner thigh stretches only partially address.
Stretching the adductor longus effectively requires understanding its specific anatomy and the positions that place it under maximum stretch. This guide covers exactly that, along with the most effective stretches, a structured routine, and the strengthening work needed to prevent tightness from returning.
What the Adductor Longus Is and Where It Is
The adductor longus is a long, triangular muscle that runs from the front of the pubic bone diagonally downward and outward to the middle third of the femur. It sits at the front of the inner thigh and is typically the most prominent of the adductor muscles when visible. If you sit with your legs apart and press your fingers into the top of the inner thigh near the groin, the firm, cord-like structure you feel is the adductor longus tendon.
Its primary actions are hip adduction (pulling the leg toward and across the midline), hip flexion assistance, and medial rotation of the hip. These combined functions mean it is loaded during nearly every lower body movement, particularly during running, kicking, and lateral movement.
Why the Adductor Longus Gets Tight
Repetitive hip flexion and adduction: Running, cycling, and rowing repeatedly load the adductor longus in its shortened position during hip flexion, which over time leads to adaptive shortening.
Kicking sports: Football, rugby, and martial arts require repeated high-force adductor contractions during kicking. The adductor longus absorbs and generates force rapidly during these movements and accumulates tension without adequate recovery.
Prolonged sitting with legs together: Sitting with the knees together or crossed keeps the adductors in a shortened position for extended periods, producing the same adaptive shortening as prolonged hip flexor sitting.
Previous groin strain: After a groin strain, the adductor longus often develops protective tension that persists as chronic tightness long after the acute injury has healed. This protective tightness reduces range of motion and increases reinjury risk if not addressed.
Muscle imbalance: Weakness in the hip abductors allows the adductors to become relatively dominant, which over time increases their resting tension.
How to Identify Adductor Longus Tightness
Groin tightness during hip abduction: Sitting or lying with both legs spread apart produces a pulling sensation in the upper inner thigh near the groin on one or both sides. The adductor longus is the muscle under tension in this position.
Tightness during the kicking motion: A pulling or tight sensation at the front of the groin during hip flexion combined with leg extension, as occurs during a kick or a long stride, is characteristic of adductor longus tightness.
Tenderness at the pubic attachment: Gentle pressure on the front of the pubic bone where the adductor longus originates produces tenderness that reproduces the familiar groin aching. This is a reliable indicator of adductor longus tightness or strain.
Reduced hip abduction range: Lying on your back and spreading both legs apart reveals asymmetry in how far each leg can move outward. The side with less range has a tighter adductor longus.
The Best Adductor Longus Stretches
1. Supine Hip Abduction Stretch
Purpose: The most direct stretch for the adductor longus in a gravity-assisted position that allows complete muscle relaxation and a sustained hold.
How to do it:
- Lie on your back with both legs extended on the floor
- Allow one or both legs to fall outward to the side, sliding along the floor
- Let gravity gradually draw the leg further outward over the hold time
- To target one side specifically, keep the other leg straight and allow only the target leg to fall outward
- Hold for 60 to 90 seconds per side
- Use a strap around the ankle to control the range if needed
Key cue: The stretch should be felt in the upper inner thigh, close to the groin. If you feel it lower in the inner thigh, the gracilis or adductor magnus are being targeted more than the adductor longus. To shift emphasis higher toward the adductor longus, reduce the amount of hip abduction and add a slight hip flexion component by bending the knee slightly.
2. Seated Straddle Stretch (Short Lever)
Purpose: Stretches the adductor longus in a seated position with the body leaning forward, which combines hip abduction with hip flexion to target the adductor longus in its dual role.
How to do it:
- Sit on the floor with both legs spread apart as wide as is comfortable
- Keep both legs straight and feet pointing upward
- Place both hands on the floor in front of you
- Slowly walk the hands forward, leaning the torso toward the floor
- Hold at the point of comfortable stretch for 60 to 90 seconds
- To target one side specifically, rotate the torso to face one leg and lean forward over it
Key cue: The stretch should be felt in the inner thigh, not the lower back. If you feel it predominantly in the lower back, sit on a folded blanket to tilt the pelvis forward slightly before leaning.
Modification: If spreading the legs to a full straddle position is uncomfortable, begin with the legs only slightly wider than hip-width and gradually increase the width over several weeks.
3. Butterfly Stretch (Short Range)
Purpose: Targets the adductor longus in a hip-flexed position, which is different from the extended-leg stretches and addresses the muscle in the range relevant to sitting and cycling.
How to do it:
- Sit on the floor and bring the soles of the feet together
- Hold the feet with both hands and allow the knees to fall outward toward the floor
- Sit tall with a straight spine
- Gently press the knees downward with the elbows or allow gravity to provide the stretch
- Hold for 60 seconds
Key cue: Sitting on a folded blanket elevates the pelvis and significantly improves the effectiveness of this stretch by allowing the pelvis to tilt forward. Without this elevation, many people round the lower back and reduce the adductor stretch. The stretch should be felt in the inner thighs and groin, not the lower back.
Progression: Once the standard butterfly feels easy, lean the torso forward gently while maintaining the upright spine to deepen the stretch.
4. Kneeling Adductor Longus Stretch
Purpose: Stretches the adductor longus in a position that combines hip abduction with hip extension, targeting the muscle across both its primary actions simultaneously.
How to do it:
- Kneel on one knee with the other leg extended out to the side, foot flat on the floor
- The extended leg should be at approximately 90 degrees to the body
- Keep the torso upright and gently shift the hips toward the extended leg side
- Hold for 45 to 60 seconds per side
Key cue: The knee of the extended leg should point upward toward the ceiling, not forward. This external rotation of the hip in the stretched leg shifts the stretch more specifically onto the adductor longus.
Modification: If the kneeling position is uncomfortable on the knee, perform this stretch standing with the extended leg resting on a low surface such as a step or ottoman.
5. Standing Lateral Lunge Stretch
Purpose: Stretches the adductor longus dynamically through a movement pattern, making it ideal as a warm-up before activity or as a transitional stretch between static holds.
How to do it:
- Stand with feet very wide apart, approximately twice shoulder-width
- Shift the body weight to one side, bending the knee of the weighted side
- Keep the other leg straight with the foot flat on the floor
- Hold the bottom position for 3 to 5 seconds, feeling the stretch in the inner thigh of the straight leg
- Push back to standing and shift to the other side
- Complete 8 to 10 repetitions per side
Key cue: The straight leg foot should remain flat on the floor throughout. If the heel rises, the stance is too wide for your current flexibility. Reduce the width and build gradually.
6. Wall-Supported Adductor Stretch
Purpose: Uses the wall to support the legs in an abducted position, allowing a completely passive and deeply sustained stretch that is particularly effective for releasing chronic adductor longus tightness.
How to do it:
- Lie on your back with your sitting bones close to a wall
- Extend both legs upward against the wall
- Slowly allow both legs to slide outward along the wall, opening into a V shape
- Allow gravity to gradually draw the legs further apart over the hold time
- Hold for 2 to 3 minutes
- To come out, bend the knees and roll to one side
Key cue: The closer your sitting bones are to the wall, the more intense the stretch. If the stretch is too intense initially, move further from the wall until a comfortable range is achieved.
Why this variation is particularly effective: The completely passive nature of the wall-supported stretch removes all muscular effort, allowing the adductors to fully relax into the position. Research suggests that passive stretching sustained for 2 minutes or more produces greater long-term flexibility improvements than shorter active stretches.
7. Side-Lying Adductor Stretch
Purpose: Targets the adductor longus in a side-lying position that isolates the inner thigh without loading the hip flexors or lower back.
How to do it:
- Lie on your side with both legs straight
- Lift the top leg and place the foot on the floor in front of the bottom knee for support
- Allow the bottom leg to drop toward the floor in front, opening the hip into abduction
- Use a folded blanket under the inner thigh of the bottom leg for support if needed
- Hold for 45 to 60 seconds per side
Key cue: The bottom leg dropping forward rather than backward is what targets the adductor longus specifically. Dropping the leg backward stretches the hip abductors rather than the adductors.
A Structured Adductor Longus Stretching Routine
Pre-exercise warm-up (5 minutes):
- Standing lateral lunge stretch: 2 x 8 reps per side
- Butterfly stretch: 60 seconds
Post-exercise or daily flexibility session (12 to 15 minutes):
- Supine hip abduction stretch: 2 x 60 seconds per side
- Seated straddle stretch: 90 seconds, then 60 seconds facing each leg
- Kneeling adductor longus stretch: 2 x 45 seconds per side
- Wall-supported adductor stretch: 2 to 3 minutes
For acute tightness or after a groin strain (gentle routine):
- Butterfly stretch with blanket elevation: 2 x 60 seconds
- Supine hip abduction at reduced range: 2 x 45 seconds per side
- Side-lying adductor stretch: 45 seconds per side
Strengthening to Complement Stretching
Adductor longus tightness that keeps returning after stretching usually indicates underlying weakness. The muscle develops protective tension as a response to inadequate strength, particularly in the adductor magnus and gracilis that share the adduction load.
The most effective strengthening exercises to pair with adductor longus stretching are the Copenhagen exercise for eccentric adductor strength, the lateral lunge for functional adduction loading, and the sumo squat for adductor magnus hip extension development. These are covered in detail in the adductor strengthening exercises article on this site.
A combined programme of daily adductor longus stretching and adductor strengthening three times per week produces the most reliable and lasting improvements in both flexibility and injury resilience.
Who Needs to Prioritise Adductor Longus Stretching
Football players and kicking athletes: The adductor longus is the most commonly strained muscle in football, and its tightness is one of the primary risk factors for groin strain. Regular adductor longus stretching is a foundational injury prevention practice for anyone in a kicking sport.
Runners: The adductor longus assists with hip flexion during the swing phase of running. Tightness here alters stride mechanics and contributes to the compensatory patterns that produce IT band syndrome and hip pain in distance runners.
Cyclists: The combination of prolonged hip flexion and repetitive pedalling loads the adductor longus in its shortened position for extended periods. Cyclists who neglect adductor stretching develop progressive inner thigh tightness that eventually affects hip mobility and saddle comfort.
Those returning from groin strain: Restoring adductor longus flexibility after a groin strain is an essential step in rehabilitation that is frequently rushed or skipped entirely. Returning to sport with residual tightness is one of the most reliable predictors of reinjury.
People with hip flexor tightness: The adductor longus assists with hip flexion and tends to become tight alongside the hip flexors in people who sit for long periods. Addressing adductor longus tightness alongside hip flexor work produces better overall hip mobility outcomes than addressing either in isolation.
Frequently Asked Questions
How is the adductor longus stretch different from a general groin stretch? The adductor longus is one of five adductor muscles, and different stretches target different muscles within the group. The adductor longus is best targeted in positions that combine hip abduction with slight hip flexion, which matches its dual anatomical role. General groin stretches often target the gracilis or adductor magnus more than the longus. The specific positioning guidance in this article ensures the adductor longus receives the primary stretch stimulus.
How long does it take to improve adductor longus flexibility? Most people notice meaningful improvement within 3 to 4 weeks of daily stretching. Significant chronic tightness, particularly following a previous groin strain, may take 6 to 8 weeks of consistent work to substantially improve. Daily practice produces meaningfully faster results than stretching two to three times per week.
Can I stretch the adductor longus if I have a groin strain? In the acute phase of a groin strain, avoid stretching the adductor longus as it can aggravate the injury. Once acute pain has resolved, typically after 3 to 7 days for mild strains, gentle stretching at a reduced range can be introduced. Always work within a pain-free range and progress gradually. If in doubt, seek physiotherapy guidance before stretching a recent groin strain.
Why does my adductor longus keep getting tight even after stretching? Recurrent tightness that returns quickly after stretching usually indicates underlying weakness or a training load issue. The adductor longus develops protective tension when it is being asked to do more than it is strong enough to handle. Adding adductor strengthening work alongside stretching addresses the cause rather than just the symptom.
Is the adductor longus the same as the groin muscle? The term “groin muscle” is colloquial and refers to the general inner thigh and pubic region rather than one specific muscle. The adductor longus is the muscle most commonly referred to as the groin muscle in a sporting context because it is the most frequently strained, but the groin region also includes the other adductors, the iliopsoas, and several smaller muscles.